JP5845719B2 - Camera shake correction apparatus, camera shake correction method, and program - Google Patents

Description

  The present invention relates to a camera shake correction apparatus, a camera shake correction method, and a program that perform camera shake correction when imaging a subject.

  2. Description of the Related Art Conventionally, there has been known an imaging apparatus that includes a camera shake correction mechanism and is configured so that a user can set a direction in which camera shake correction is performed (a direction in which camera shake correction is not performed) (see, for example, Patent Document 1).

JP 2003-189164 A

By the way, when the user intentionally moves the apparatus main body to change the imaging range, it may be better not to perform camera shake correction in the moving direction.
However, in the case of the above-mentioned Patent Document 1, although the user can set not to perform the camera shake correction in the direction in which the apparatus main body is moved, the camera shake correction is performed by a predetermined operation every time the direction in which the apparatus main body is moved is changed. It was necessary to change the direction of not performing the operation, and the work was complicated.

  Therefore, an object of the present invention is to provide a camera shake correction device, a camera shake correction method, and a program that can automatically perform effective camera shake correction in consideration of the user's intention.

In order to solve the above-described problem, an image stabilization apparatus according to the present invention includes a correction unit that sequentially performs camera shake correction that corrects camera shake that occurs in image data of a subject that is sequentially captured by an imaging unit, and the subject that is captured by the imaging unit. Based on the image data, the specifying means for specifying the regularity related to the positions of the plurality of subject constituent parts constituting the subject , and the imaging means based on the regularity specified by the specifying means Prediction means for predicting a range change direction in which the imaging range of the subject continuously changes , and control means for controlling camera shake correction by the correction means in the range change direction predicted by the prediction means. It is characterized by that.

Further, the camera shake correction method of the present invention is a camera shake correction method using a camera shake correction apparatus, which sequentially performs camera shake correction for correcting camera shake that occurs in image data of a subject that is sequentially imaged by an imaging unit, and the imaging Based on the image data of the subject imaged by the means, a process for specifying regularity related to the positions of a plurality of subject constituent parts constituting the subject , and the imaging based on the specified regularity And a process for predicting a range change direction in which the imaging range of the subject imaged by the means changes continuously, and a process for controlling the camera shake correction in the predicted range change direction . .

Further, the program of the present invention includes a correction unit that sequentially performs a camera shake correction for correcting a camera shake that occurs in image data of a subject that is sequentially imaged by the imaging unit, and a computer of the camera shake correction device, the image of the subject imaged by the imaging unit. Based on the image data, the imaging means is picked up based on the regularity specified by the specifying means and the regularity specified by the specifying means, specifying the regularity related to the position of the plurality of subject constituting parts constituting the subject. A function for predicting a range change direction in which the imaging range of the subject continuously changes, and a control unit for controlling camera shake correction by the correction unit in the range change direction predicted by the prediction unit. It is said.

  According to the present invention, effective camera shake correction can be automatically performed in consideration of the user's intention.

It is a block diagram which shows schematic structure of the imaging device of Embodiment 1 to which this invention is applied. 3 is a flowchart illustrating an example of an operation related to an imaging process by the imaging apparatus of FIG. 1. It is a figure for demonstrating the operation | movement which concerns on the imaging process by the imaging device of FIG. It is a figure for demonstrating the operation | movement which concerns on the imaging process by the imaging device of FIG. It is a figure for demonstrating the operation | movement which concerns on the imaging process by the imaging device of FIG. It is a block diagram which shows schematic structure of the imaging device of the modification of Embodiment 1 to which this invention is applied. 7 is a flowchart illustrating an example of an operation related to an imaging process by the imaging apparatus of FIG. 6. It is a block diagram which shows schematic structure of the imaging device of Embodiment 2 to which this invention is applied. It is a flowchart which shows an example of the operation | movement which concerns on the imaging process by the imaging device of FIG.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, the scope of the invention is not limited to the illustrated examples.

[Embodiment 1]
The imaging apparatus 100 according to the first embodiment identifies regularity related to the positions of a plurality of subject constituting units that constitute a subject based on the image data of the subject. Then, the imaging apparatus 100 predicts a range change direction in which the imaging range of the subject imaged by the imaging unit 1 continuously changes based on the specified regularity. Furthermore, the imaging apparatus 100 suppresses camera shake correction in the predicted range change direction.

FIG. 1 is a block diagram illustrating a schematic configuration of an imaging apparatus 100 according to the first embodiment to which the present invention is applied.
As shown in FIG. 1, the imaging apparatus 100 specifically includes an imaging unit 1, an image data generation unit 2, a memory 3, an image processing unit 4, a camera shake correction unit 5, and a recording medium control unit 6. An output control unit 7, a display unit 8, an operation input unit 9, and a central control unit 10.

The imaging unit 1 constitutes an imaging unit that images a subject, and includes a lens unit 1a, an electronic imaging unit 1b, and an imaging control unit (not shown).
Although not shown, the lens unit 1a includes a zoom lens group and a focus lens group, for example, and the position in the optical axis direction can be adjusted by a lens driving mechanism (for example, a motor) (not shown).

The electronic imaging unit 1b includes, for example, an image sensor such as a charge coupled device (CCD) or a complementary metal-oxide semiconductor (CMOS). In addition, the electronic imaging unit 1b receives an optical image that has passed through various lenses and a diaphragm (not shown) of the lens unit 1a under the control of an imaging control unit (not shown) by the electronic imaging unit 1b. Image data) and output to the image data generation unit 2.
Although illustration is omitted, the electronic imaging unit 1b is mounted on a stage unit that is driven in an XY direction (for example, left and right direction and up and down direction) by a stage driving unit 5a (described later) of the camera shake correction unit 5. .

For example, the image data generation unit 2 appropriately adjusts the gain for each RGB color component with respect to the analog value signal of the image frame transferred from the electronic imaging unit 1b, and then samples and holds it by a sample hold circuit (not shown). The A / D converter (not shown) converts it into digital data, and the color process circuit (not shown) performs color process processing including pixel interpolation processing and γ correction processing, and then the digital luminance signal Y and color difference. Signals Cb and Cr (YUV data) are generated.
The luminance signal Y and the color difference signals Cb and Cr output from the color process circuit are DMA transferred to a memory 3 used as a buffer memory via a DMA controller (not shown).

  The memory 3 is composed of, for example, a DRAM (Dynamic Random Access Memory) or the like, and temporarily stores data processed by the image processing unit 4, the camera shake correction unit 5, the central control unit 10, and the like.

The image processing unit 4 includes an image data acquisition unit 4a, a specifying unit 4b, and a prediction unit 4c.
Note that each unit of the image processing unit 4 includes, for example, a predetermined logic circuit, but the configuration is an example and the present invention is not limited to this.

The image data acquisition unit 4a sequentially acquires image data of the subject.
That is, the image data acquisition unit 4a sequentially acquires the image data of the subject generated by the image data generation unit 2. Specifically, the image data acquisition unit 4a receives a plurality of image data (YUV data) generated by the image data generation unit 2 from each of the image frames sequentially captured at a predetermined imaging frame rate by the electronic imaging unit 1b. It acquires sequentially from the memory 3 at predetermined intervals.

The specifying unit 4b specifies the regularity related to the positions of a plurality of subject constituting units constituting the subject.
That is, the specifying unit 4b specifies regularity related to the positions of a plurality of subject constituting units constituting the subject based on the image data of the subject imaged by the imaging unit 1.
Here, the regularity related to the positions of the plurality of subject constituent portions is the regularity based on the presence or absence of a pattern having morphological continuity in each subject constituent portion. For example, when the subject is a text having characters as the subject constituting portion, the regularity related to the position of the plurality of characters (subject constituting portion) includes a set G of a plurality of characters existing in the angle of view, a line spacing The positional relationship etc. mutually prescribed | regulated from the blank K1, the dividing line K2, etc. are mentioned (refer FIG. 3).
Specifically, when the subject is a text having characters as the subject constituting unit, the specifying unit 4b determines a plurality of characters constituting the text based on the image data of the text acquired by the image data acquiring unit 4a. A set G (for example, a lump of a plurality of characters), a plurality of character arrays L,... (For example, a character arrangement direction in a two-dimensional space), and a delimiter K that divides the plurality of character sets G from other subject components The regularity related to the positions of the plurality of subject constituent parts is specified with reference to at least one of (for example, the space K1 between lines, the separator line K2, etc.). For example, the specifying unit 4b binarizes the luminance signal (Y) in the YUV data of the text acquired by the image data acquiring unit 4a with a predetermined threshold, and corresponds to characters, symbols, lines, and the like constituting the text. A binary image (not shown) including a pixel having a first pixel value “1” and a pixel having a second pixel value “0” corresponding to the background portion of the text is generated. Then, the specifying unit 4b sets the degree of collection of each pixel having the first pixel value “1” and the second pixel value “0”, the first pixel value “1”, and the second pixel value “0”. Based on the regularity of the arrangement of pixels and the like, the regularity related to the position of the subject component is specified.

Here, in each of the character arrays L, in the binary image, for example, pixels having a first pixel value “1” corresponding to each of a plurality of characters are arranged in a predetermined direction (for example, the vertical direction). It is arranged.
In the binary image, for example, the character set G is an orthogonal shape in which a plurality of character arrays L in which pixels having the first pixel value “1” are continuously arranged in a predetermined direction are orthogonal to the predetermined direction. They are arranged at regular intervals in the direction (for example, the left-right direction), that is, alternately arranged with regions composed of pixels having the second pixel value “0”.
The space K1 between the lines includes, for example, a blank region existing between character arrays L, L adjacent in the orthogonal direction, a blank region surrounding the character set G, and the like. Further, the space K1 between the rows is composed of, for example, pixels having the second pixel value “0” in the binary image.
In the binary image, for example, the separation line K2 includes pixels having a first pixel value “1” that are continuously arranged in one direction (for example, the left-right direction).

Also, for example, as shown in FIG. 3, the user holds the imaging apparatus 100 in the normal direction (holds the captured image in a landscape orientation rather than the so-called portrait shooting), and shoots and displays the display screen of the display unit 8. Of the text photographed in a basic state in which the orientation of the imaging device 100 and the subject (in this example, the newspaper) is aligned so that the characters displayed on the screen can be read normally (the upper side of the characters is above the imaging device 100) In this case, the specifying unit 4b has, as regularity related to a plurality of characters, a point in which a plurality of character arrays L constituting the character set G are arranged at regular intervals in the left-right direction, and the character set G The point where the spaces K1 and K1 between the rows are provided above and below, and the point where the dividing line K2 is provided above the space K1 between the upper rows are specified. Further, the specifying unit 4b has a plurality of characters constituting the character array L arranged in the vertical direction based on the character set G, the character array L, and the separator K, that is, in the above basic state. If it is assumed that this is done, the point that the character array L is “vertical writing” is specified as regularity related to a plurality of characters. Hereinafter, unless otherwise specified, processing is performed on the premise that shooting is performed in the basic state.
As described above, the specifying unit 4b constitutes a specifying unit that specifies regularity related to the positions of a plurality of subject constituting units constituting the subject based on the image data of the subject imaged by the imaging unit 1. .

The prediction unit 4c predicts a range change direction in which the imaging range of the subject imaged by the imaging unit 1 changes continuously.
That is, the predicting unit 4c continuously changes the imaging range of the subject imaged by the imaging unit 1 based on the regularity related to the positions of the plurality of subject constituting units constituting the subject identified by the identifying unit 4b. Predict the range change direction to be performed. That is, when the subject is imaged, the user displaces the apparatus main body in a predetermined direction (for example, the vertical direction or the horizontal direction) with respect to the position of the subject (for example, parallel movement or rotational movement). In contrast, the imaging unit 1 is displaced. Accordingly, the imaging range of the subject imaged by the imaging unit 1 also changes continuously in a predetermined direction, and the prediction unit 4c predicts the range change direction in which the imaging range of the subject changes continuously. To identify.
Note that the continuity related to the range changing direction in which the imaging range of the subject continuously changes is not limited to the case where the imaging range of the subject continuously changes in one direction at a substantially constant speed. It includes a case where after changing for a predetermined time in one direction, stopping for a predetermined short time (for example, a time of less than 1 second) and then changing again in the same direction.
That is, it is only necessary to be able to identify and predict a change in the imaging range in a certain direction due to a movement operation of the imaging device 100 intended by the user with respect to a random change in the imaging range caused by a camera shake that is not intended by the user. .

Specifically, for example, when the subject is a text having characters as the subject component (see FIG. 3), the predicting unit 4c determines the character set G, the character array L, and the delimiter specified by the specifying unit 4b. Based on the regularity related to the position of the plurality of characters with at least one of the parts K as a reference, the range change direction in which the imaging range of the subject continuously changes is predicted.
Further, the prediction unit 4c is based on the position of the character set G within the imaging range captured by the imaging unit 1, and more specifically, at a user-desired enlargement rate set by the CPU of the central control unit 10. With the position of the character set G of the enlarged text as a reference, there is a character that is outside the imaging range of the text imaging unit 1 and that is composed of the text with the character set G and related to the character set G. The range change direction is predicted based on the direction and the arrangement direction of the plurality of characters (character arrangement L).
For example, as shown in FIG. 4A, the space K1 between the lines as the delimiter K surrounds the character set G in a “U” shape (upper L1 of the plurality of character arrays L,... , Lower L2 and right L3), the prediction unit 4c is in the direction in which no separator K is provided for the position of the character set G, that is, in the left direction (in FIG. It is determined that there is a character related to the character set G outside the imaging range of the text imaging unit 1. As a result, when the text is imaged, the prediction unit 4c displaces the apparatus main body (imaging unit 1) in the left direction with respect to the position of the character set G, and accordingly, the text (subject) imaging range. Change continuously in the left direction, that is, the left direction is the range change direction.
Further, as shown in FIG. 4B, since the character array L is “vertical writing” and the space K1 between the lines is located on the upper side L1 and the right side L3 of the plurality of character sets G, The predicting unit 4c is arranged in a downward direction (indicated by a white arrow in the figure) where the separator K is not provided with respect to the position of the character set G. It is determined that there will be a character associated with the set G. As a result, when the text is imaged, the prediction unit 4c displaces the apparatus main body (imaging unit 1) downward with respect to the position of the character set G, and accordingly, the text (subject) imaging range. Change continuously in the downward direction, that is, the downward direction is the range change direction. In this case, it is determined that there is also a character related to the character set G in the left direction. However, since the character array L is “vertical writing”, the downward direction is given priority to predict the range change direction. .

  As described above, the prediction unit 4c configures a prediction unit that predicts a range change direction in which the imaging range of the subject imaged by the imaging unit 1 continuously changes based on the regularity specified by the specifying unit 4b. ing.

  The camera shake correction unit 5 corrects camera shake during imaging of a subject, and specifically includes a stage drive unit 5a, a correction control unit 5b, and a suppression control unit 5c.

The stage drive unit 5a moves the stage unit on which the electronic imaging unit 1b is mounted in a predetermined direction under the control of the correction control unit 5b.
That is, the stage drive unit 5a sequentially drives the stage unit (correction movable unit) in the XY directions so as to correct camera shake as a drive unit based on the image data generated by the image data generation unit 2. Specifically, the stage drive unit 5a moves the stage unit in the vertical direction (to correct the camera shake amount and camera shake direction calculated by the correction control unit 5b based on the image data generated by the image data generation unit 2). Y direction) and left and right direction (X direction) are sequentially driven.

The correction control unit 5b sequentially performs camera shake correction for correcting camera shake occurring in the image data of the subject.
That is, the correction control unit 5b sequentially performs camera shake correction that corrects camera shake that occurs in image data of a subject that is sequentially captured by the imaging unit 1. Specifically, the correction control unit 5b calculates the amount of camera shake and the direction of camera shake based on the image data of the subject sequentially captured by the imaging unit 1. For example, the correction control unit 5b uses the regularity related to the positions of a plurality of subject constituting units constituting the subject identified by the identifying unit 4b based on the image frames sequentially acquired by the image data acquiring unit 4a as a reference. Identify and change the amount and direction of change in the imaging range of the subject according to changes in the regularity (for example, the arrangement of the character set G and the separator K) related to a predetermined number of image frames acquired per unit time The amount of camera shake and the direction of camera shake are calculated according to the amount and direction.
In addition, the correction control unit 5b calculates a camera shake correction amount and a camera shake correction direction (for example, a current value necessary for driving the stage drive unit 5a, an energization time, etc.) according to the calculated camera shake amount and the direction of camera shake. A control signal related to the driving of the stage drive unit 5a is determined based on the calculated camera shake correction amount and the camera shake correction direction. Then, the correction control unit 5b controls the drive of the stage drive unit 5a according to the determined control signal to move the stage unit in the XY directions. Thereby, the image data of the subject imaged by the imaging unit 1 and generated by the image data generation unit 2 in a state where the stage unit is moved in the XY directions by the correction control unit 5b becomes an image in which camera shake is corrected.
In this manner, the correction control unit 5b constitutes a correction unit that sequentially performs camera shake correction for correcting camera shake that occurs in image data of a subject that is sequentially captured by the imaging unit 1.

The suppression control unit 5c suppresses camera shake correction in the range change direction in which the imaging range of the subject imaged by the imaging unit 1 changes continuously.
That is, the suppression control unit 5c suppresses camera shake correction by the correction control unit 5b in the range change direction in which the subject imaging range predicted by the prediction unit 4c continuously changes. Specifically, the suppression control unit 5c determines whether or not the camera shake direction calculated by the correction control unit 5b is equal to the range change direction in which the imaging range of the subject predicted by the prediction unit 4c changes continuously. . And when it determines with the said camera shake direction being equal to the range change direction, the suppression control part 5c suppresses the camera shake correction by the correction control part 5b of the said camera shake direction (range change direction). Here, suppressing the camera shake correction in the range change direction prohibits the camera shake correction in the range change direction from being performed, or weakens the strength of the camera shake correction in the range change direction relative to other directions. Say to do.
In this case, camera shake correction may be suppressed when the difference between the calculated camera shake direction and the predicted range change direction is within a predetermined range, but may be as follows.
That is, the suppression control unit 5c sets the amount of camera shake and the direction of camera shake calculated by the correction control unit 5b to the first vector corresponding to the predicted range change direction and the second vector in the direction orthogonal to the first vector. The image stabilization is suppressed (for example, prohibited) for the first vector, while the image stabilization is not suppressed (for example, allowed) for the second vector. It may be.
If the prediction unit 4c selectively predicts either the vertical direction or the horizontal direction as the range change direction when the subject is a character, the suppression control unit 5c It is only necessary to suppress camera shake correction for any one of the vectors in the left-right direction, which corresponds to the X direction (left-right direction) and the Y direction (up-down direction), which are the driving directions of the stage unit. This can be easily realized by suppressing the drive of the stage portion in that direction.

  The suppression control unit 5c is predicted by the prediction unit 4c when an operation mode for enlarging the image data of the subject at a predetermined enlargement ratio and displaying the image data on the display unit 8 is set by the CPU of the central control unit 10. The camera shake correction by the correction control unit 5b in the range changing direction in which the imaging range of the subject continuously changes is suppressed. Specifically, based on a predetermined operation of the operation input unit 9 by the user, the text display mode in which the image data of text is enlarged at a predetermined enlargement ratio and displayed on the display unit 8 as the operation mode is the central control unit 10. When set by the CPU, the suppression control unit 5c has regularity related to the positions of the plurality of characters based on at least one of the character set G and the character array L specified by the specifying unit 4b. The camera shake correction by the correction control unit 5b in the range change direction in which the imaging range of the subject predicted by the prediction unit 4c continuously changes is suppressed.

For example, as shown in FIG. 5A, the direction of camera shake (represented by a downward arrow on the right side in the figure) and the range change direction (indicated by a white arrow on the left side in the figure) are the same direction. In this case, the suppression control unit 5c prohibits camera shake correction by the correction control unit 5b in the direction. On the other hand, as shown in FIG. 5B, the direction of camera shake (represented by the lower left arrow in the figure) and the range changing direction (represented by the lower left arrow in the figure) are different directions. In this case, the suppression control unit 5c does not prohibit camera shake correction by the correction control unit 5b in the direction.
In this way, the suppression control unit 5c constitutes a suppression unit that suppresses camera shake correction by the correction control unit 5b in the range change direction predicted by the prediction unit 4c.

The recording medium control unit 6 is configured such that the recording medium M is detachable, and controls reading of data from the loaded recording medium M and writing of data to the recording medium M.
The recording medium M is composed of, for example, a non-volatile memory (flash memory) or the like. However, the recording medium M is an example and is not limited to this, and can be arbitrarily changed as appropriate.

  The output control unit 7 performs control to output image data of the subject imaged by the imaging unit 1 to the display unit 8. Specifically, the output control unit 7 includes a VRAM (Video Random Access Memory), a VRAM controller, a digital video encoder, and the like. The digital video encoder reads the luminance signal Y and the color difference signals Cb and Cr read from the memory 3 and stored in the VRAM (not shown) under the control of the central control unit 10 through the VRAM controller. Are periodically read out, and a video signal is generated based on these data and output to the display unit 8.

The output control unit 7 enlarges the image data of the subject displayed on the display unit 8 at a predetermined enlargement ratio and outputs the enlarged image data to the display unit 8 as an enlargement unit.
That is, the output control unit 7 is displayed on the display unit 8 according to an enlargement ratio (for example, 2 times) designated by the CPU of the central control unit 10 based on a predetermined operation such as a zoom button of the operation input unit 9 by the user. Enlargement processing is performed on the image data of the subject. Specifically, the output control unit 7 generates image data of an enlarged image enlarged at a predetermined ratio in both the horizontal direction and the vertical direction in accordance with a specified enlargement ratio based on the image data of the subject read from the VRAM. Then, a video signal is generated based on the image data and output to the display unit 8.
Thereby, the image of the subject displayed on the display unit 8 is an image in which a part of the image area of the subject before enlargement is enlarged.

Further, the output control unit 7 outputs the image data of the subject imaged by the imaging unit 1 to the display unit 8 in a state where the camera shake correction in the range change direction is suppressed.
That is, the output control unit 7 reads out and acquires the image data of the subject imaged by the imaging unit 1 in a state where the camera shake correction in the range change direction is suppressed by the suppression control unit 5c, and acquires the acquired image data. Is displayed on the display unit 8 and displayed on the display unit 8.
Here, the output control unit 7 constitutes an output control unit that outputs the image data of the subject imaged by the imaging unit 1 to the display unit 8 in a state where the camera shake correction in the range change direction is suppressed by the suppression control unit 5c. ing.

  The display unit 8 is, for example, a liquid crystal display device, and displays an image captured by the imaging unit 1 on the display screen based on a video signal from the output control unit 7. Specifically, the display unit 8 displays the live view image while sequentially updating a plurality of image frames generated by imaging the subject by the imaging unit 1 at a predetermined frame rate in the live view mode.

  The operation input unit 9 is for performing a predetermined operation of the imaging apparatus 100. Specifically, the operation input unit 9 includes a shutter button related to an imaging instruction of a subject, a selection determination button related to an instruction to select an imaging mode, a function, etc., a zoom button related to an instruction to adjust the zoom amount, and the like (all shown) Abbreviation), a predetermined operation signal is output to the central control unit 10 in accordance with the operation of these buttons.

The selection determination button of the operation input unit 9 is an operation mode in which image data of a subject is enlarged at a predetermined enlargement ratio and displayed on the display unit 8 in a plurality of imaging modes based on a predetermined operation by the user. A setting instruction is output to the central control unit 10. Here, the operation mode includes a text display mode in which text image data is enlarged at a predetermined enlargement ratio and displayed on the display unit 8. Then, the selection determination button outputs, for example, a text display mode setting instruction designated based on a predetermined operation by the user to the central control unit 10.
The CPU of the central control unit 10 sets the operation mode in which the image data of the subject (text) is enlarged at a predetermined enlargement ratio and displayed on the display unit 8 based on the input setting instruction.
Here, the operation input unit 9 and the central control unit 10 constitute setting means for setting an operation mode in which image data of a subject is enlarged at a predetermined enlargement ratio and displayed on the display unit 8.

  The central control unit 10 controls each unit of the imaging device 100. Specifically, although not shown, the central control unit 10 includes a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), and the like, and various processing programs for the imaging apparatus 100 (illustrated). Various control operations are performed according to (omitted).

Next, imaging processing by the imaging apparatus 100 will be described with reference to FIGS.
FIG. 2 is a flowchart illustrating an example of an operation related to the imaging process.
The imaging process is performed by, for example, enlarging text image data at a predetermined enlargement rate from a plurality of operation modes displayed on the menu screen based on a predetermined operation of the selection determination button of the operation input unit 9 by the user. This is a process executed when a text display mode to be displayed on the display unit 8 is selected and instructed.
In addition, as a process for suppressing the camera shake correction in the range change direction here, a process for prohibiting the camera shake correction in the range change direction from being performed is illustrated, but the strength of the camera shake correction in the range change direction is set to another direction. You may perform the process made weak relatively.

As shown in FIG. 2, when the imaging of the text (subject) is started by the imaging unit 1, first, the image data generation unit 2 is transferred from the electronic imaging unit 1b of the imaging unit 1 at a predetermined imaging frame rate. The image data of each image frame is sequentially generated, and the image data acquisition unit 4a of the image processing unit 4 sequentially acquires the image data generated by the image data generation unit 2 (step S1).
Next, the output control unit 7 displays the live view image while sequentially updating the display content at a predetermined display frame rate based on the image data of the plurality of image frames sequentially generated by the image data generation unit 2. (Step S2).

  Subsequently, the specifying unit 4b of the image processing unit 4 specifies the regularity related to the positions of a plurality of characters constituting the text based on the image data of the text acquired by the image data acquiring unit 4a (step). S3). Specifically, the specifying unit 4b specifies the regularity related to the positions of a plurality of characters constituting the text, based on at least one of the character set G, the character array L, and the separator K. To do.

  Next, the CPU of the central control unit 10 sets the enlargement ratio of the image displayed on the display unit 8 to a desired magnification based on a predetermined operation such as a zoom button of the operation input unit 9 by the user (step S4). . Accordingly, the output control unit 7 generates image data of an enlarged image obtained by enlarging the text image data generated by the image data generation unit 2 at a predetermined ratio in both the horizontal direction and the vertical direction according to the specified enlargement rate, A video signal is generated based on the image data and output to the display unit 8.

  Subsequently, the prediction unit 4c continuously changes the imaging range of the text imaged by the imaging unit 1 based on the regularity related to the positions of a plurality of characters constituting the text specified by the specifying unit 4b. A range change direction is predicted (step S5). Specifically, the predicting unit 4c configures the text together with the character set G, outside the imaging range of the text imaging unit 1, with reference to the position of the character set G within the imaging range. The range change direction is predicted based on the direction in which the character associated with the set G exists and the arrangement direction of the plurality of characters (character arrangement L). For example, the predicting unit 4c displays the left direction when the display mode of the text enlarged at the user-desired zoom ratio is as shown in FIG. 4A, and the display mode of the text is FIG. When the state shown in FIG. 6B is reached, the downward direction is predicted as a range change direction in which the text imaging range changes continuously.

After that, when the user displaces the apparatus main body in a predetermined direction with respect to the position of the text, the correction control unit 5b generates text images sequentially generated by the image data generation unit 2 by imaging the text by the imaging unit 1. Based on the data, camera shake (the amount of camera shake and the direction of camera shake) is detected (step S6).
Subsequently, the correction control unit 5b determines whether or not the detected camera shake direction is a range change direction predicted by the prediction unit 4c and is a camera shake that continuously changes in the direction (step S7). ).

  If it is determined in step S7 that the detected camera shake direction is the predicted range change direction and the camera shake continuously changes in that direction (step S7; Yes), the suppression control unit 5c The correction control unit 5b performs control so as to prohibit camera shake correction. Then, the correction controller 5b does not perform the camera shake correction when the camera shake correction is prohibited by the suppression controller 5c (step S8). Subsequently, the output control unit 7 captures the image data of the text imaged by the imaging unit 1 and generated by the image data generation unit 2 in a state where camera shake correction is prohibited by the suppression control unit 5c, that is, the correction control unit 5b. Text image data that has not undergone camera shake correction is output to the display unit 8 to display the text image on the display unit 8 (step S9; see FIG. 5A).

  On the other hand, when it is determined in step S7 that the detected camera shake direction is not the predicted range change direction or the camera shake that continuously changes in the direction (step S7; No), the suppression control unit 5c The camera shake correction by the correction controller 5b is not prohibited. The correction control unit 5b performs the camera shake correction on the text image data captured by the imaging unit 1 and generated by the image data generation unit 2 when the suppression control unit 5c does not prohibit the camera shake correction. (Step S10). Subsequently, the output control unit 7 outputs text image data captured by the imaging unit 1 and generated by the image data generation unit 2 to the display unit 8 in a state where camera shake correction is performed by the correction control unit 5b. Then, the image of the text is displayed on the display unit 8 (step S11; see FIG. 5B).

Thereafter, the CPU of the central control unit 10 determines whether or not an instruction to end the imaging process is input based on, for example, a predetermined operation of the operation input unit 9 by the user (step S12).
Here, when it is determined that the imaging process end instruction has not been input (step S12; No), the CPU of the central control unit 10 shifts the process to step S1 and executes the subsequent processes. In addition, the processes after step S1 are repeatedly performed until it is determined in step S12 that an instruction to end the imaging process is input.
In step S3, the process of specifying regularity related to the positions of a plurality of characters constituting the text is performed when an instruction to cancel the enlargement of the image displayed on the display unit 8 is input. In other cases, the processing may be skipped. Step S4 may be performed when an instruction to reset the magnification of the image displayed on the display unit 8 is input, and in other cases, the process may be skipped. In step S5, the regularity related to the positions of a plurality of characters constituting the text is re-specified in step S3, and the enlargement magnification of the image displayed on the display unit 8 is reset in step S4. The process may be skipped, and in other cases, the process may be skipped.

  When it is determined in step S12 that an instruction to end the imaging process has been input (step 12; Yes), the CPU of the central control unit 10 ends the imaging process.

In addition, the following processes may be sufficient as the process from step S7 to S11.
That is, instead of the process of step S7, the correction control unit 5b uses the first vector corresponding to the predicted range change direction and the first vector to detect the camera shake (the amount of camera shake and the direction of camera shake). By decomposing into the second vector in the orthogonal direction, it is determined whether or not there is a camera shake in the predicted range change direction (first vector). In this case, it does not matter whether the camera shake continuously changes in the direction.
If it is determined in the above process performed in place of the process of step S7 that there is camera shake in the predicted range change direction (first vector), the suppression control unit 5c is replaced with the process of step S8. Prohibits only camera shake correction for the first vector by the correction control unit 5b. When there is a camera shake with respect to the second vector, the correction control unit 5b performs camera shake correction with respect to the vector. Then, instead of the processing in step S9, the output control unit 7 performs imaging in a state where the camera shake correction for the first vector is not performed by the correction control unit 5b and only the camera shake correction is performed for the second vector. The text image data captured by the unit 1 and generated by the image data generation unit 2 is output to the display unit 8 to display the text image on the display unit 8.
On the other hand, if it is determined that there is no camera shake in the predicted range change direction (first vector) in the above process performed instead of the process of step S7, the suppression control is performed instead of the process of step S10. The unit 5c does not prohibit camera shake correction for the first vector by the correction control unit 5b, and when there is camera shake for the second vector, the correction control unit 5b performs only camera shake correction for the second vector. . Then, instead of the processing of step S11, the output control unit 7 is imaged by the imaging unit 1 with the camera shake correction performed only on the second vector by the correction control unit 5b, and the image data generation unit 2 captures the image. The generated text image data is output to the display unit 8 to display the text image on the display unit 8.

As described above, according to the imaging device 100 of the first embodiment, the imaging range of the subject imaged by the imaging unit 1 is continuous based on the regularity related to the positions of the plurality of subject constituting units that constitute the subject. The direction in which camera shake correction is performed with reference to the range change direction in which the imaging range of the subject that is predicted in advance changes continuously is predicted. Can be controlled automatically. That is, when the direction of camera shake is the predicted range change direction, it can be determined that the user has intentionally displaced the apparatus main body relative to the subject, and camera shake correction in this direction can be suppressed. Thus, when the direction of camera shake is other than the range change direction, it is determined that the apparatus main body has been accidentally displaced with respect to the subject, and camera shake correction for camera shake in this direction can be performed.
As described above, when the subject is imaged, it is possible to appropriately determine the direction and intensity of camera shake correction in consideration of the displacement of the imaging unit 1 with respect to the position of the intended subject by the user. Correction can be performed automatically.

  In addition, the image data of the subject that is sequentially captured is sequentially displayed, and the regularity related to the position of the plurality of subject constituent parts constituting the subject is sequentially specified while the image data of the subject is sequentially displayed, Based on the regularly specified regularity, the change in the predicted range change direction is sequentially detected, and the direction in which the camera shake correction is suppressed is sequentially changed in accordance with the change in the range change direction that is sequentially detected. Appropriate camera shake correction can be performed in accordance with the display content of the image data of the subject. That is, even when the regularity related to the positions of a plurality of subject constituent parts constituting the subject to be imaged changes due to the change of the imaging range, the user intentionally It is possible to appropriately predict the direction in which the apparatus main body is displaced with respect to the text.

  Further, on the basis of at least one of a plurality of character sets G constituting the text, a plurality of character arrays L,... Since the regularity related to the position of the plurality of subject constituting parts constituting the subject is specified, the range change direction in which the imaging range of the text continuously changes, that is, the user intentionally moves the apparatus main body with respect to the text. The direction of displacement can be predicted appropriately. That is, the user who visually recognizes the image of the text displayed on the display unit 8 intentionally uses the device by using the character set G, the character array L, and the delimiter K that constitute the acquired text as a reference. The direction in which the main body is displaced with respect to the text can be properly predicted. As a result, the display unit 8 can smoothly display the image in the direction in which the user intentionally displaces the apparatus main body with respect to the text. It can be performed.

  Further, based on the regularity related to the positions of the plurality of subject constituting parts constituting the subject based on at least one of the plurality of specified character sets G and the plurality of character arrays L,. The range change direction in which the imaging range changes continuously is predicted, so the range change direction in which the text imaging range changes continuously, that is, the direction in which the user intentionally displaces the device body relative to the text. Predictions can be made properly.

Further, with reference to the position of a plurality of character sets G constituting the text, characters outside the image capturing range of the text image capturing unit 1 and composed of the text together with the character set G and characters related to the character set G Since the range change direction in which the imaging range of the text continuously changes is predicted based on the existing direction and the arrangement direction of a plurality of characters, the user intentionally displaces the device body relative to the text. Predictions can be made properly. That is, in general, a plurality of characters constituting a text make sense because a predetermined number of characters continuous in a predetermined direction are made into a group, and all the characters are collected in the imaging range of the text imaging unit 1. When not included, the user intentionally captures the text when capturing the text so that the characters related to the set G of characters constituting the text can be visually recognized outside the imaging range. The main body of the apparatus is displaced with respect to the text. Similarly, when the user visually recognizes a plurality of characters arranged in a predetermined arrangement direction, the user intentionally displaces the apparatus main body with respect to the text when capturing the text.
Therefore, the range changing direction in which the imaging range of the subject imaged by the imaging unit 1 that is displaced with respect to the position of the text changes continuously, that is, the direction in which the user intentionally displaces the apparatus main body with respect to the text. Can be properly predicted.

  In addition, since the range change direction is predicted based on the regularity related to the positions of a plurality of subject constituting portions constituting the subject with the identified separator K as a reference, for example, a stage composed of a short number of characters. Also for a set of texts, it is possible to appropriately predict a range change direction in which the text imaging range continuously changes, that is, a direction in which the user intentionally displaces the apparatus main body with respect to the text.

In addition, when an operation mode is set in which the image data of the subject is enlarged at a predetermined magnification and displayed on the display unit 8, camera shake correction in a range change direction in which the imaging range of the predicted text continuously changes is performed. Suppress. Specifically, when a text display mode in which text image data is enlarged at a predetermined enlargement ratio and displayed on the display unit 8 is set, a plurality of character sets G and a plurality of characters constituting the specified text are set. Based on at least one of the character arrays L,..., The camera shake correction in the range change direction predicted based on the regularity related to the positions of the plurality of subject constituent parts constituting the subject is suppressed.
Therefore, based on the setting of the operation mode such as the text display mode by the user, the direction in which the camera shake correction is performed is automatically controlled on the basis of the range changing direction in which the imaging range of the subject predicted in advance changes continuously. Can do.

  In addition, since the image data of the subject imaged by the imaging unit 1 is output to the display unit 8 in a state in which the camera shake correction in the range change direction is suppressed, the camera shake correction in the range change direction in which the text imaging range changes continuously. , That is, an image whose display contents change so as to follow the displacement of the device main body by the user can be displayed on the display unit 8, and the user can respond to his / her own intentional operation. Thus, it is possible to visually recognize an image whose display content changes.

<Modification>
Next, a modified example of the imaging device 101 will be described with reference to FIGS.
FIG. 6 is a block diagram illustrating a schematic configuration of an imaging apparatus 101 according to a modification of the first embodiment to which the present invention is applied.
The modified example has substantially the same configuration as that of the first embodiment except for the details described below, and the description thereof is omitted.

  As illustrated in FIG. 6, the image processing unit 4 of the imaging apparatus 101 includes a range change amount detection unit 4 d and a determination unit 4 e in addition to the image data acquisition unit 4 a, the specification unit 4 b, and the prediction unit 4 c.

The range change amount detection unit 4d detects a change amount in which the imaging range of the imaging unit 1 has changed in a direction different from the range change direction predicted by the prediction unit 4c.
That is, when the subject is imaged, the imaging unit 1 is displaced with respect to the position of the subject by displacing the apparatus main body in a predetermined direction (for example, the vertical direction or the horizontal direction) with respect to the position of the subject. Then, the range change amount detection unit 4d, when the imaging range by the imaging unit 1 changes in a direction different from the range change direction in which the imaging range of the subject predicted in advance by the prediction unit 4c changes continuously, The amount of change in the imaging range of the subject by the imaging unit 1 in a different direction is detected.
Specifically, the range change amount detection unit 4d performs the same processing as the camera shake amount and camera shake direction calculation processing by the correction control unit 5b. That is, the range change amount detection unit 4d uses the regularity related to the positions of a plurality of subject constituting units constituting the subject specified by the specifying unit 4b based on the image frames sequentially acquired by the image data acquiring unit 4a. Other than the range change direction predicted in advance by the prediction unit 4c in accordance with the change in regularity (for example, the arrangement of the character set G and the separator K) related to a predetermined number of image frames acquired per unit time. The amount of change in the imaging range of the subject in the direction of is specified.
Note that the range change amount detection unit 4d uses the calculation result of the amount of camera shake and the direction of camera shake by the correction control unit 5b, so that the imaging range by the imaging unit 1 is different from the range change direction predicted by the prediction unit 4c. The changed amount of change may be detected.
As described above, the range change amount detection unit 4d configures a detection unit that detects a change amount in which the imaging range of the imaging unit 1 has changed in a direction different from the range change direction predicted by the prediction unit 4c.

The determination unit 4e determines whether or not the change amount detected by the range change amount detection unit 4d is greater than or equal to a predetermined value.
That is, the determination unit 4e determines whether or not the amount of change in the imaging range by the imaging unit 1 detected in a direction different from the range change direction predicted by the range change amount detection unit 4d is equal to or greater than a predetermined value.
Then, as a result of the determination by the determination unit 4e, when the determination unit 4e determines that the amount of change detected by the range change amount detection unit 4d is equal to or greater than a predetermined value, the correction control unit 5b The intensity of camera shake correction in a direction different from the range change direction is relatively weaker than when the predetermined value is not exceeded. That is, when the determination unit 4e determines that the amount of change is equal to or greater than a predetermined value, the correction control unit 5b moves, for example, by a page turning by the user in a direction different from the range change direction predicted in advance. Therefore, camera shake correction is performed that is relatively weaker (less than a predetermined amount) than when the change amount is not equal to or greater than a predetermined value (for example, in the case of periodic camera shake in a direction different from the range change direction).
Thus, the determination unit 4e constitutes a determination unit that determines whether or not the change amount detected by the range change amount detection unit 4d is equal to or greater than a predetermined value.

Here, imaging processing by the imaging apparatus 101 of the modification will be described with reference to the flowchart of FIG.
The imaging process is substantially the same as the imaging process of the first embodiment except for the points described below, and detailed description thereof is omitted.

That is, similarly to the imaging process of the first embodiment, the processes in steps S1 to S7 are performed under the control of the CPU of the central control unit 10.
In step S7, it is determined that the camera shake direction detected in step S6 by the correction control unit 5b is not the range change direction predicted by the prediction unit 4c or is not a camera shake that continuously changes in that direction. (Step S7; No), the range change amount detection unit 4d captures an image in a direction different from the range change direction predicted by the prediction unit 4c using the calculation result of the shake amount and the shake direction by the correction control unit 5b. After detecting the amount of change in the imaging range by the unit 1, the determination unit 4e determines whether or not the amount of change detected by the range change amount detection unit 4d is greater than or equal to a predetermined value (step S101).
The range change amount detection unit 4d detects a change amount in which the imaging range of the imaging unit 1 has changed in a direction different from the range change direction predicted in advance as a camera shake amount in the different direction by the correction control unit 5b. May be.

If it is determined in step S101 that the amount of change in the imaging range by the imaging unit 1 in a direction different from the range change direction is equal to or greater than a predetermined value (step S101; Yes), the correction control unit 5b In response to the change in the imaging range (camera shake), the camera shake correction of less than a predetermined amount in which the strength of the camera shake correction is relatively weak is performed (step S102).
On the other hand, when it is determined in step S101 that the amount of change of the imaging range by the imaging unit 1 in a direction different from the range change direction is not equal to or greater than a predetermined value (step S101; No), the correction control unit 5b In response to a change in the imaging range (camera shake) by the unit 1, a (normal) camera shake correction of a predetermined amount or more with a relatively high camera shake correction intensity is performed (step S103).

  Then, the output control unit 7 displays the image data of the text captured by the imaging unit 1 and generated by the image data generation unit 2 with the camera shake correction performed at a predetermined intensity by the correction control unit 5b. And the image of the text is displayed on the display unit 8 (step S11; see FIG. 5B).

Thereafter, similarly to the imaging process of the first embodiment, the CPU of the central control unit 10 determines whether an instruction to end the imaging process is input based on a predetermined operation of the operation input unit 9 by the user, for example. (Step S12).
Note that in the first modification as well, as described in the first embodiment, the processing from steps S7 to S11 is performed by using a first vector corresponding to the predicted range change direction and orthogonal to the first vector. The processing may be performed after being decomposed into the second vector in the direction to be performed.
In this case, in steps S101 to S103, it is determined whether or not the amount of change with respect to the second vector is greater than or equal to a predetermined value, the intensity of camera shake correction for the second vector is changed, and for the first vector, Perform normal image stabilization.

  As described above, according to the modification of the imaging apparatus 101, the amount of change in which the imaging range has changed in a direction different from the predicted range change direction is detected, and whether or not the detected amount of change is equal to or greater than a predetermined value. When the amount of change is determined to be greater than or equal to a predetermined value, the strength of camera shake correction in a direction different from the range change direction is relatively weaker than when the amount of change is not greater than the predetermined value. For example, when the user turns the page in a direction different from the range change direction predicted in advance, and the relative position of the imaging range by the imaging unit 1 with respect to the subject changes greatly, the range change is performed. In the direction different from the direction, the camera shake correction with relatively high strength of the camera shake correction is not performed. As a result, a display image in which the strength of camera shake correction is made relatively weak so as to correspond to the intentional operation of the apparatus main body by the user, that is, an image in which the switching of display contents is expressed more smoothly on the display unit 8. Can be displayed.

[Embodiment 2]
FIG. 8 is a block diagram illustrating a schematic configuration of an imaging apparatus 200 according to the second embodiment to which the present invention is applied.
The imaging apparatus 200 according to the second embodiment has substantially the same configuration as the imaging apparatus 100 according to the first embodiment and the imaging apparatus 101 according to the modified example except for those described in detail below, and detailed description thereof is omitted. .

In the first embodiment, the user holds the imaging apparatus 100 in the normal direction (holds the captured image in a landscape orientation rather than so-called portrait shooting), and captures characters displayed on the display screen of the display unit 8. Is processed on the premise that the image capturing apparatus 100 and the subject (in this example, the newspaper) are aligned with each other so that the image can be read normally (the upper side of the characters is above the image capturing apparatus 100). However, in the second embodiment, it is assumed that the user holds the imaging device 200 in an arbitrary direction. In this case, the upper side of the character is not necessarily on the upper side of the imaging apparatus 200. Whether the character is “vertical writing” or “horizontal writing” only by specifying the character arrangement direction that is substantially equal to the moving direction of the imaging apparatus 200. Cannot be specified. Whether the orientation of the imaging apparatus 200 is vertical or horizontal may be detected by a gravity sensor or the like, but in the second embodiment, the upper side of the character is determined by character recognition, and the character is displayed together with the determination result of the character arrangement direction. Specify "vertical writing" or "horizontal writing".
As illustrated in FIG. 8, the specifying unit 4b of the second embodiment includes a first recognition unit b1 and a second recognition unit b2.

The 1st recognition part b1 recognizes the character which comprises a text.
That is, when the image data of the subject imaged by the imaging unit 1 is text having characters, the first recognizing unit b1 determines the characters constituting the text based on the text image data captured by the imaging unit 1. Recognize Specifically, the first recognition unit b1 performs an OCR (Optical Character Recognition) process on the text image data acquired by the image data acquisition unit 4a, and performs a process of recognizing characters included in the text. . At this time, when the first recognizing unit b1 recognizes that the text includes a plurality of characters, the first recognition unit b1 divides the plurality of characters in units of one character, and arranges the plurality of characters constituting the text L,. The set G may be recognized.
The first recognizing unit b1 recognizes characters by performing the same process as the regularity identifying method related to the positions of the plurality of subject constituting units constituting the subject by the identifying unit 4b of the first embodiment. Also good.
Thus, the 1st recognition part b1 comprises the 1st recognition means which recognizes the character which comprises the said text based on the image data of the text imaged by the imaging part 1. FIG.

The second recognition unit b2 recognizes the delimiter K that constitutes the text.
That is, the second recognizing unit b2 recognizes a delimiter K (for example, a space K1 between lines, a delimiter K2, etc.) that delimits a set G of a plurality of characters constituting the text from other subject composing units. Specifically, for example, the second recognizing unit b2 performs straight line detection processing such as Hough transform on the text image data acquired by the image data acquiring unit 4a, and the first pixel value “ A separation line K2 is detected as a straight line in which pixels having “1” are continuously arranged, and a space K1 between rows is detected as an area in which pixels having the second pixel value “0” are continuously arranged. In addition, the second recognition unit b2 determines, for example, a blank existing between L and L adjacent to each other in a predetermined direction, a predetermined direction, based on the recognition result of the character by the first recognition unit b1, in particular, the character array L. A space provided on the direction side orthogonal to a predetermined direction with respect to a character set G composed of a plurality of character arrays L,... Arranged side by side is recognized as a space K1 between lines.
The second recognizing unit b2 recognizes the delimiter K by performing the same processing as the method for identifying regularity related to the positions of the plurality of subject constituting units constituting the subject by the identifying unit 4b of the first embodiment. You may do it.
For example, the second recognition unit b2 includes a dictionary of words, and when a plurality of characters arranged side by side match a word registered in the dictionary, the second recognition unit b2 recognizes the word delimiter as the delimiter K. Also good.
In this way, the second recognition unit b2 recognizes the delimiter K that composes text and divides a plurality of character sets G from other subject components based on the text image data captured by the imaging unit 1. The second recognition means is configured.

Further, the specifying unit 4b uses the at least one of the plurality of character sets G and the plurality of character arrays L,... Related to the characters recognized by the first recognition unit b1 as the reference positions of the plurality of subject constituent units. The regularity related to may be specified.
Specifically, when the subject imaged by the imaging unit 1 is text having characters, the specifying unit 4b is composed of characters recognized by the first recognition unit b1, for example, a plurality of character sets G and a plurality of characters. The regularity related to the positions of the plurality of subject constituent parts may be specified with at least one of the character arrangements L,.
For example, as illustrated in FIG. 3, the specifying unit 4 b is configured to display a plurality of subject constituent units based on the direction of each character recognized by the first recognition unit b 1 and the arrangement direction of the plurality of character arrays L. The regularity related to the position is specified as “vertical writing”. In the example of FIG. 3, when the direction of each character is horizontal, even if the arrangement direction of the plurality of character arrays L,... Is vertical, it is specified as “horizontal writing”.
That is, the identification unit 4b determines whether to recognize “vertical writing” and “horizontal writing” that are normally recognized by humans. The identification unit 4b automatically recognizes each character direction, automatically recognizes the arrangement direction of a plurality of characters, and each character. This is performed by automatic determination processing of “vertical writing” and “horizontal writing” according to the combination of the direction and the arrangement direction of a plurality of characters.
Note that the arrangement direction of the characters described above is an example, and is not limited to this, and can be arbitrarily changed as appropriate.

Further, the specifying unit 4b may specify regularity related to the positions of the plurality of subject constituting units with reference to the delimiter K recognized by the second recognizing unit b2.
Specifically, when the subject imaged by the imaging unit 1 is text having characters, the specifying unit 4b separates the set G of a plurality of characters recognized by the second recognition unit b2 from other subject constituent units. Based on the delimiter K, the regularity related to the position of the plurality of subject components is specified.
For example, as illustrated in FIG. 3, the specifying unit 4 b sets the regularity related to the positions of the plurality of subject constituent units as “vertical” with reference to the blank K1 and the dividing line K2 between the rows recognized by the second recognition unit b2. Specified as "write".
Note that the above-described blank K1 and the dividing line K2 between the rows are examples, and are not limited to these, and can be arbitrarily changed as appropriate.

Next, imaging processing by the imaging apparatus 200 according to the second embodiment will be described with reference to FIGS.
FIG. 9 is a flowchart illustrating an example of an operation related to the imaging process. Note that the imaging processing of the second embodiment is substantially the same as the imaging processing of the first embodiment and the modified example except for the points described below, and detailed description thereof is omitted.
In addition, as a process for suppressing the camera shake correction in the range change direction here, a process for prohibiting the camera shake correction in the range change direction from being performed is illustrated, but the strength of the camera shake correction in the range change direction is set to another direction. You may perform the process made weak relatively.

  As shown in FIG. 9, when the imaging of the text (subject) is started by the imaging unit 1 as in the imaging process of the first embodiment, the image data acquisition unit 4a of the image processing unit 4 The image data generated in step 2 is sequentially acquired (step S1), and the output control unit 7 displays the live view image on the display unit 8 while sequentially updating the display content at a predetermined display frame rate (step S2).

Subsequently, the specifying unit 4b of the image processing unit 4 specifies the regularity related to the positions of a plurality of characters constituting the text based on the image data of the text acquired by the image data acquiring unit 4a (step). S31). Specifically, the first recognition unit b1 performs an OCR (Optical Character Recognition) process on text image data, and performs a process of recognizing characters included in the text. The second recognizing unit b2 performs a predetermined straight line detection process on the text image data, and recognizes a delimiter K (a space K1 between lines, a delimiter K2, etc.) constituting the text. Then, the specifying unit 4b includes a plurality of character sets G and a plurality of character arrays L related to the character recognized by the first recognition unit b1, and a delimiter K recognized by the second recognition unit b2. As a reference, the regularity related to the positions of a plurality of subject constituent parts is specified. For example, the specifying unit 4b uses the information about each character such as the character array G and the beginning / end of a line and the section of the character array G at the position of a plurality of characters. Identify as related regularity.
Here, one section is a predetermined block included in the image data of the text. For example, as shown in FIG. 3, one section (XX) consisting of the first to ninth lines of a plurality of character sets G1. (The calculator will be released ...).

  Next, the CPU of the central control unit 10 sets the enlargement ratio of the image displayed on the display unit 8 to a desired magnification based on a predetermined operation such as a zoom button of the operation input unit 9 by the user (step S4). . Accordingly, the output control unit 7 generates image data of an enlarged image obtained by enlarging the text image data generated by the image data generation unit 2 at a predetermined ratio in both the horizontal direction and the vertical direction according to the specified enlargement rate, A video signal is generated based on the image data and output to the display unit 8.

  Subsequently, the prediction unit 4c continuously changes the imaging range of the text imaged by the imaging unit 1 based on the regularity related to the positions of a plurality of characters constituting the text specified by the specifying unit 4b. A range change direction is predicted (step S5).

Here, the prediction of the range change direction in step S5 will be described in detail.
First, the specifying unit 4b determines whether the character arrangement of the text image data is displayed up to the end of the line (step S51). Specifically, the specifying unit 4b determines whether the lower end L2 of the plurality of character arrays L,... Is displayed (see FIG. 4A).
If it is determined in step S51 that the character arrangement of the text image data is displayed up to the end of the line (step S51; Yes), the specifying unit 4b determines whether all sections of the text image data are displayed. Is determined (step S52).

If it is determined in step S52 that all sections of the text image data are displayed (step S52; Yes), the prediction unit 4c predicts that there is no intentional change in the imaging range by the user, As a result of the prediction by the prediction unit 4c, the correction control unit 5b specifies the direction of camera shake correction so as to fix the screen (step S53). As a result, the camera shake correction is performed in the vertical direction and the horizontal direction by the correction control unit 5b so as to fix the image frame displayed on the display unit 8, that is, with an intensity that substantially eliminates camera shake.
Note that the control of the stage driving unit 5a by the correction control unit 5b related to the camera shake correction here may be performed before the camera shake is actually detected. That is, when a camera shake is detected, the camera shake correction is not prohibited or executed in accordance with the direction of the camera shake, but is displayed on the display unit 8 as a case where there is no intentional change in the imaging range by the user. Since the direction of camera shake correction is specified so as to fix the screen that is present, the correction control unit 5b may immediately control the camera shake correction in the vertical direction and the horizontal direction regardless of whether or not the camera shake is detected. .

On the other hand, if it is determined in step S51 that the character arrangement of the text image data is not displayed to the end of the line (step S51; No, see FIG. 4B), the predicting unit 4c is in the middle of the character arrangement. As a result of prediction by the prediction unit 4c, the suppression control unit 5c identifies the predicted range change direction as a direction for prohibiting camera shake correction. (Step S54). Specifically, the predicting unit 4c predicts the range change direction based on regularity (for example, vertical writing) related to the positions of a plurality of subject constituting units constituting the subject identified by the identifying unit 4b. Thereby, the camera shake correction with respect to the predicted range change direction (indicated by a white arrow in the figure) is prohibited by the suppression control unit 5c.
Subsequently, the correction control unit 5b specifies a direction orthogonal to the range change direction predicted by the prediction unit 4c as a direction for performing a predetermined amount of camera shake correction (step S55). Thereby, the camera shake correction is not performed by the correction control unit 5b in the direction prohibited by the suppression control unit 5c, and the direction is not prohibited, that is, the direction orthogonal to the predicted range change direction (the direction different from the range change direction). ) Only a predetermined amount of camera shake correction is performed.
Note that the control of the stage drive unit 5a by the correction control unit 5b related to the camera shake correction here may be performed before the detection of the camera shake as in the camera shake correction for fixing the screen described above, or actually the camera shake. May be performed after the detection.

  Even when it is determined in step S52 that not all the sections of the text image data are displayed (step S52; No), the prediction unit 4c moves the process to step S54, and thereafter Execute the process.

After that, when the user displaces the apparatus main body in a predetermined direction with respect to the position of the text, the correction control unit 5b generates text images sequentially generated by the image data generation unit 2 by imaging the text by the imaging unit 1. Based on the data, camera shake (the amount of camera shake and the direction of camera shake) is detected (step S6).
Next, the range change amount detection unit 4d uses the calculation result of the camera shake amount and the direction of camera shake by the correction control unit 5b to detect the change amount in which the imaging range by the imaging unit 1 has changed, and then the determination unit 4e Then, it is determined whether or not the amount of change detected by the range change amount detector 4d is greater than or equal to a predetermined value (step S201). At this time, the range change amount detection unit 4d may detect a change amount in which the imaging range of the imaging unit 1 has changed in a direction different from the range change direction predicted by the prediction unit 4c.

When it is determined in step S201 that the amount of change in the imaging range by the imaging unit 1 is not greater than or equal to the predetermined value (step S201; No), the correction control unit 5b is predicted in step S53 or step S54. The camera shake correction is performed for the camera shake in the present direction (step S202).
On the other hand, when it is determined in step S201 that the amount of change in the imaging range by the imaging unit 1 is greater than or equal to a predetermined value (step S201; Yes), the correction control unit 5b cancels camera shake correction in all directions. (Step S203). Thereafter, when the movement of the apparatus main body is stopped (step S204), the CPU of the central control unit 10 shifts the process to step S1, and controls the execution of the subsequent processes.

Next, the central control unit 10 determines whether an instruction to end the imaging process is input (step S12). Here, if it is determined that the imaging process end instruction has not been input (step S12; No), the central control unit 10 shifts the process to step S1 and executes the subsequent processes.
In step S31, the process of specifying regularity related to the positions of a plurality of characters constituting the text is performed when an instruction to cancel enlargement of the image displayed on the display unit 8 is input. In this case, the processing may be skipped. Step S4 may be performed when an instruction to reset the magnification of the image displayed on the display unit 8 is input, and in other cases, the process may be skipped. Step S5 is when the regularity related to the positions of a plurality of characters constituting the text is re-specified in Step S31, or the enlargement magnification of the image displayed on the display unit 8 is reset in Step S4. Otherwise, the process may be skipped.

  On the other hand, when it is determined in step S12 that an instruction to end the imaging process has been input (step 12; Yes), the central control unit 10 ends the imaging process.

As described above, according to the imaging apparatus 200 of the second embodiment, similarly to the imaging apparatus 100 of the first embodiment, camera shake is based on the range change direction in which the imaging range of the subject predicted in advance changes continuously. The direction in which correction is performed can be automatically controlled. Accordingly, when the subject is imaged, the direction and intensity of camera shake correction can be appropriately determined in consideration of the displacement of the imaging unit 1 relative to the position of the intended subject by the user, and effective camera shake correction can be performed. It can be done automatically.
In particular, for example, when the user turns the page in a direction different from the range change direction predicted in advance, and the relative position of the imaging range by the imaging unit 1 with respect to the subject greatly changes, By canceling the camera shake correction for the direction, a display image in which the camera shake correction is canceled so as to correspond to the intentional operation of the apparatus main body by the user, that is, an image in which the switching of the display content is quickly expressed is displayed on the display unit. 8 can be displayed.

  Further, based on the image data of the text, the characters constituting the text are recognized, and the subject is based on at least one of the plurality of character sets G and the plurality of character arrays L,. Since the regularity related to the positions of the plurality of subject constituting parts constituting the text is specified, it is possible to appropriately predict the range change direction in consideration of the arrangement of characters constituting the text.

  Also, based on the image data of the text, the text is composed, the delimiter K that delimits the set G of a plurality of characters from the other subject composing units is recognized, and the subject is configured with the recognized delimiter K as a reference. Since the regularity related to the positions of the plurality of subject constituent parts is specified, even if the character set G cannot be completely recognized, the range change direction in consideration of the separator K constituting the text is appropriately predicted. be able to.

The present invention is not limited to the above-described first and second embodiments and modifications, and various improvements and design changes may be made without departing from the spirit of the present invention.
For example, in the first and second embodiments and the modifications described above, the prediction unit 4c uses the position of the character set G within the imaging range captured by the imaging unit 1 as a reference outside the imaging range of the text by the imaging unit 1. Then, the imaging range of the subject is continuous based on the direction in which the text is composed with the character set G and the characters related to the character set G exist and the arrangement direction of the plurality of characters (character array L). The range changing direction that changes automatically is predicted, but the prediction method of the range changing direction in which the imaging range of the subject continuously changes by the prediction unit 4c is an example, and is not limited to this, and can be arbitrarily selected. Can be changed.
That is, the prediction unit 4c uses the position of a plurality of character sets G constituting the text as a reference and is outside the imaging range of the text imaging unit 1, and configures the text together with the character set G to form a character set. The direction in which the character associated with G exists may be predicted as the range change direction in which the imaging range of the subject changes continuously. For example, the predicting unit 4c is based on the position of a set G of a plurality of characters constituting the three-stage text (upper stage G1, middle stage G2, and lower stage G3; see FIG. 3) included inside the imaging range by the imaging unit 1. As shown in FIG. 4A, the direction in which characters related to a plurality of character sets G exist outside the imaging range of the imaging unit 1 (indicated by white arrows in the figure) is predicted as the range change direction. May be.

  Therefore, the direction in which the user reads the text is substantially equal to the range change direction in which the imaging range of the subject continuously changes, and the imaging range of the subject that is imaged by the imaging unit 1 that is displaced with respect to the position of the text. The range changing direction that continuously changes, that is, the direction in which the user intentionally displaces the apparatus main body with respect to the text can be properly predicted.

Similarly, the predicting unit 4c configures the text together with the character set G outside the imaging range of the text imaging unit 1 with reference to the position of the set G of the plurality of characters constituting the text. The direction in which the delimiter K exists may be predicted as the range change direction in which the imaging range of the subject changes continuously.
Even in such a configuration, even if the characters constituting the text cannot be recognized, the imaging range of the subject imaged by the imaging unit 1 is continuous in consideration of the position of the separator K constituting the text. The range changing direction that changes automatically, that is, the direction in which the user intentionally displaces the apparatus main body with respect to the text can be properly predicted.

In the first and second embodiments and the modified examples, the suppression control unit 5c is predicted when the operation mode for enlarging the image data of the subject at a predetermined enlargement ratio and displaying it on the display unit 8 is set. The camera shake correction in the range change direction in which the imaging range of the text continuously changes is suppressed, but the suppression timing of the camera shake correction in the range change direction is an example and is not limited to this, and is arbitrarily arbitrary Can be changed.
In other words, the suppression control unit 5c determines the range predicted by the prediction unit 4c when the image data of the subject that has been enlarged at an enlargement rate equal to or greater than a predetermined value includes characters as the subject component. You may make it suppress the camera-shake correction | amendment by the correction control part 5b of a change direction.
In this case, an operation such as setting a predetermined operation mode by the user is not necessary, and when the subject image data enlarged at an enlargement ratio equal to or greater than a predetermined value includes characters as a subject component, In addition, the camera shake correction by the correction control unit 5b in the range change direction can be suppressed.

In the first and second embodiments and the modified examples, a range change direction in which the imaging range of the subject imaged by the imaging unit 1 that is displaced with respect to the position of the subject continuously changes is predicted, and the direction However, for example, the suppression control unit 5c is based on the regularity related to the positions of a plurality of subject constituting units constituting the subject specified by the specifying unit 4b. The range change direction in which the imaging range of the subject imaged by the imaging unit 1 continuously changes may be specified to suppress the camera shake correction by the correction control unit 5b in the direction.
Even in such a configuration, as in the first and second embodiments and the modification example, the direction in which the camera shake correction is performed can be automatically controlled on the basis of the range change direction in which the imaging range of the subject continuously changes. it can. Accordingly, when the subject is imaged, the direction and intensity of camera shake correction can be appropriately determined in consideration of the displacement of the imaging unit 1 relative to the position of the intended subject by the user, and effective camera shake correction can be performed. It can be done automatically.

  Moreover, what was illustrated in the said Embodiment 1, 2 and a modification is an example, and is not restricted to this. 3 to 5 illustrated as diagrams for explaining the operation related to the imaging process are examples, and are not limited to these, and can be arbitrarily changed as appropriate.

In addition, in the first and second embodiments and the modified examples, the functions of the correction unit, the specifying unit, the predicting unit, and the suppressing unit are controlled by the specifying unit of the image processing unit 4 under the control of the central control unit 10. 4b, the prediction unit 4c, the correction control unit 5b of the camera shake correction unit 5, and the suppression control unit 5c are driven. However, the present invention is not limited to this, and the central control unit 10 performs a predetermined program or the like. It is good also as a structure implement | achieved by performing.
That is, a program including a correction processing routine, a specific processing routine, a prediction processing routine, and a suppression processing routine is stored in a program memory (not shown) that stores the program. Then, the CPU of the central control unit 10 may function as a correction unit that sequentially performs camera shake correction for correcting camera shake that occurs in image data of a subject that is sequentially captured by the imaging unit. In addition, the CPU of the central control unit 10 as a specifying unit that specifies regularity related to the positions of a plurality of subject constituent parts constituting the subject based on the image data of the subject imaged by the imaging unit by the specifying process routine. You may make it function. In addition, the CPU of the central control unit 10 predicts the range change direction in which the imaging range of the subject imaged by the imaging unit continuously changes based on the regularity specified by the specifying unit by the prediction processing routine. You may make it function as. Further, the CPU of the central control unit 10 may function as a suppression unit that suppresses camera shake correction by the correction unit for the range change direction predicted by the prediction unit by the suppression processing routine.

  Similarly, the first recognizing unit, the second recognizing unit, the detecting unit, the determining unit, the setting unit, and the output control unit are also realized by a predetermined program executed by the CPU of the central control unit 10. Also good.

  Furthermore, as a computer-readable medium storing a program for executing each of the above processes, a non-volatile memory such as a flash memory or a portable recording medium such as a CD-ROM is applied in addition to a ROM or a hard disk. Is also possible. A carrier wave is also used as a medium for providing program data via a predetermined communication line.

Although several embodiments of the present invention have been described, the scope of the present invention is not limited to the above-described embodiments, but includes the scope of the invention described in the claims and equivalents thereof.
The invention described in the scope of claims attached to the application of this application will be added below. The item numbers of the claims described in the appendix are as set forth in the claims attached to the application of this application.
[Appendix]
<Claim 1>
Correction means for sequentially performing camera shake correction for correcting camera shake that occurs in image data of a subject that is sequentially imaged by the imaging means;
Specifying means for specifying regularity related to the positions of a plurality of subject constituting parts constituting the subject based on image data of the subject imaged by the imaging means;
Predicting means for predicting a range change direction in which the imaging range of the subject imaged by the imaging means continuously changes based on the regularity specified by the specifying means;
Suppression means for suppressing camera shake correction by the correction means in the range change direction predicted by the prediction means;
A camera shake correction device characterized by comprising:
<Claim 2>
A display unit that sequentially displays image data of a subject that is sequentially captured by the imaging unit;
The specifying means sequentially specifies the regularity related to the positions of a plurality of subject constituting parts constituting the subject while the image data of the subject is sequentially displayed by the display means,
The prediction means sequentially detects a change in the predicted range change direction based on the regularity sequentially specified by the specifying means,
The camera shake correction apparatus according to claim 1, wherein the suppression unit sequentially changes a direction in which camera shake correction by the correction unit is suppressed according to a change in the range change direction that is sequentially detected by the prediction unit. .
<Claim 3>
The subject includes text having characters as the subject constituting unit,
The specifying means further includes:
Based on the image data of the text imaged by the imaging means, a set of a plurality of characters constituting the text, an array of the plurality of characters, and a delimiter that divides the set of the plurality of characters from other subject constituent units The camera shake correction device according to claim 1, wherein the regularity is specified based on at least one of the criteria.
<Claim 4>
The subject includes text having characters as the subject constituting unit,
First recognition means for recognizing characters constituting the text based on the image data of the text imaged by the imaging means,
The specifying means is:
4. The regularity is specified based on at least one of the set of the plurality of characters and the arrangement of the plurality of characters related to the character recognized by the first recognition unit. The camera shake correction device according to any one of the above.
<Claim 5>
The predicting means further includes:
The range change direction is predicted based on the regularity based on at least one of the set of the plurality of characters specified by the specifying unit and the arrangement of the plurality of characters. The camera shake correction apparatus according to 3 or 4.
<Claim 6>
The predicting means further includes:
Based on the position of a set of a plurality of characters constituting the text, outside the imaging range of the text by the imaging means, the text is configured with the set of characters, and the characters related to the set of characters The camera shake correction apparatus according to claim 5, wherein the existing direction is predicted as the range change direction.
<Claim 7>
The predicting means further includes:
Based on the position of a set of a plurality of characters constituting the text, outside the imaging range of the text by the imaging means, the text is configured with the set of characters, and the characters related to the set of characters The camera shake correction apparatus according to claim 5, wherein the range change direction is predicted based on an existing direction and an arrangement direction of the plurality of characters.
<Claim 8>
The subject includes text having characters as the subject constituting unit,
Based on image data of the text imaged by the imaging means, further comprising second recognition means for recognizing a delimiter that constitutes the text and delimits the set of the plurality of characters from other subject constituent parts;
The specifying means is:
The camera shake correction apparatus according to claim 1, wherein the regularity is specified with reference to the delimiter recognized by the second recognition unit.
<Claim 9>
The predicting means further includes:
9. The camera shake correction apparatus according to claim 8, wherein the range change direction is predicted based on the regularity based on the delimiter identified by the identifying unit.
<Claim 10>
The predicting means further includes:
Based on the position of a set of a plurality of characters constituting the text, the direction of the delimiter that is outside the imaging range of the text by the imaging means and constitutes the text together with the set of characters, The camera shake correction apparatus according to claim 9, wherein the camera shake correction apparatus predicts a range change direction.
<Claim 11>
Detecting means for detecting an amount of change in the imaging range by the imaging means in a direction different from the range change direction predicted by the prediction means;
Determination means for determining whether or not the amount of change detected by the detection means is greater than or equal to a predetermined value;
The correction means includes
When the determination unit determines that the amount of change is equal to or greater than a predetermined value, the strength of camera shake correction in a direction different from the range change direction is relatively weaker than when the amount of change is not equal to or greater than a predetermined value. The camera shake correction device according to claim 1, wherein
<Claim 12>
The suppression means further includes
The correction means for the range change direction predicted by the prediction means when the image data of the subject expanded by the enlargement means at a magnification ratio equal to or greater than a predetermined value includes characters as the subject constituting unit. The camera shake correction apparatus according to claim 1, wherein the camera shake correction by the camera is suppressed.
<Claim 13>
Further comprising setting means for setting an operation mode in which the image data of the subject is enlarged at a predetermined magnification and displayed on the display means;
The suppression means is
The camera shake correction by the correcting unit in the range change direction predicted by the predicting unit is suppressed when the operation mode is set by the setting unit. The camera shake correction device described in 1.
<Claim 14>
The subject includes text having characters as the subject constituting unit,
The operation mode includes a text display mode in which image data of the text is enlarged at a predetermined enlargement ratio and displayed on the display means.
The suppression means is
The rule based on at least one of a set of a plurality of characters and an arrangement of the plurality of characters constituting the text specified by the specifying unit when the text display mode is set by the setting unit The camera shake correction apparatus according to claim 13, wherein the camera shake correction performed by the correction unit in the range change direction predicted by the prediction unit based on the characteristics is suppressed.
<Claim 15>
15. The apparatus according to claim 1, further comprising an output control unit that outputs image data of a subject imaged by the imaging unit to the display unit in a state where the camera shake correction in the range change direction is suppressed by the suppression unit. The camera shake correction device according to any one of the above.
<Claim 16>
An image stabilization method using an image stabilization device,
Processing for sequentially performing camera shake correction for correcting camera shake that occurs in image data of a subject that is sequentially imaged by an imaging means;
A process for specifying regularity related to the positions of a plurality of subject constituting units constituting the subject based on image data of the subject imaged by the imaging means;
A process of predicting a range change direction in which an imaging range of the subject imaged by the imaging unit continuously changes based on the specified regularity;
A process of suppressing the camera shake correction in the predicted range change direction;
An image stabilization method comprising:
<Claim 17>
The computer of the image stabilizer
Correction means for sequentially performing camera shake correction for correcting camera shake occurring in image data of a subject that is sequentially imaged by the imaging means;
Specifying means for specifying regularity related to the positions of a plurality of subject constituting units constituting the subject based on image data of the subject imaged by the imaging means;
A predicting unit that predicts a range change direction in which the imaging range of the subject imaged by the imaging unit continuously changes based on the regularity specified by the specifying unit;
Suppression means for suppressing camera shake correction by the correction means in the range change direction predicted by the prediction means;
A program characterized by functioning as

100, 101, 200 Imaging device 1 Imaging unit 4 Image processing unit 4b Identification unit b1 First recognition unit b2 Second recognition unit 4c Prediction unit 4d Range change amount detection unit 4e Determination unit 5 Camera shake correction unit 5b Correction control unit 5c Inhibition control Unit 7 Output control unit 8 Display unit 9 Operation input unit 10 Central control unit

Claims (17)

Correction means for sequentially performing camera shake correction for correcting camera shake that occurs in image data of a subject that is sequentially imaged by the imaging means;
Specifying means for specifying regularity related to the positions of a plurality of subject constituting parts constituting the subject based on image data of the subject imaged by the imaging means;
Predicting means for predicting a range change direction in which the imaging range of the subject imaged by the imaging means continuously changes based on the regularity specified by the specifying means;
And control means for suppressing the image stabilization by the correcting means predicted the range change direction by said prediction means;
A camera shake correction device characterized by comprising: A display unit that sequentially displays image data of a subject that is sequentially captured by the imaging unit;
The specifying means sequentially specifies the regularity related to the positions of a plurality of subject constituting parts constituting the subject while the image data of the subject is sequentially displayed by the display means,
The prediction means sequentially detects a change in the predicted range change direction based on the regularity sequentially specified by the specifying means,
The camera shake correction apparatus according to claim 1 , wherein the control unit sequentially changes a direction in which camera shake correction by the correction unit is suppressed according to a change in the range change direction that is sequentially detected by the prediction unit. . The subject includes text having characters as the subject constituting unit,
The specifying means further includes:
Based on the image data of the text imaged by the imaging means, a set of a plurality of characters constituting the text, an array of the plurality of characters, and a delimiter that divides the set of the plurality of characters from other subject constituent units image stabilization apparatus according to claim 1 or 2, wherein the identifying the regularity at least any one the basis of the. The subject includes text having characters as the subject constituting unit,
First recognition means for recognizing characters constituting the text based on the image data of the text imaged by the imaging means,
The specifying means is:
Claims 1 to 3, characterized in that the basis of at least one of the set and sequence of the plurality of characters of the plurality of characters according to the recognized character by said first recognizing means, identifying the regularity The camera shake correction device according to any one of the above. The subject includes text having characters as the subject constituting unit,
The specifying means further includes:
Based on the image data of the text imaged by the imaging means, a set of a plurality of characters constituting the text, an array of the plurality of characters, and a delimiter that divides the set of the plurality of characters from other subject constituent units Identifying the regularity based on at least one of
The predicting means further includes:
Claims, characterized in that on the basis of the regularity of the reference at least one of the set and sequence of the plurality of characters of the plurality of characters specified by the specifying means, for predicting the range change direction The camera shake correction apparatus according to any one of 1 to 4 . The predicting means further includes:
Based on the position of a set of a plurality of characters constituting the text, outside the imaging range of the text by the imaging means, the text is configured with the set of characters, and the characters related to the set of characters The camera shake correction apparatus according to claim 5 , wherein the existing direction is predicted as the range change direction. The predicting means further includes:
Based on the position of a set of a plurality of characters constituting the text, outside the imaging range of the text by the imaging means, the text is configured with the set of characters, and the characters related to the set of characters The camera shake correction apparatus according to claim 5 , wherein the range change direction is predicted based on an existing direction and an arrangement direction of the plurality of characters. The subject includes text having characters as the subject constituting unit,
Based on image data of the text imaged by the imaging means, further comprising second recognition means for recognizing a delimiter that constitutes the text and delimits the set of the plurality of characters from other subject constituent parts;
The specifying means is:
The camera shake correction apparatus according to claim 1 , wherein the regularity is specified with reference to the delimiter recognized by the second recognition unit. The predicting means further includes:
9. The camera shake correction apparatus according to claim 8 , wherein the range change direction is predicted based on the regularity based on the delimiter identified by the identifying unit. The predicting means further includes:
Based on the position of a set of a plurality of characters constituting the text, the direction of the delimiter that is outside the imaging range of the text by the imaging means and constitutes the text together with the set of characters, The camera shake correction apparatus according to claim 9 , wherein the camera shake correction apparatus predicts a range change direction. Detecting means for detecting an amount of change in the imaging range by the imaging means in a direction different from the range change direction predicted by the prediction means;
Determination means for determining whether or not the amount of change detected by the detection means is greater than or equal to a predetermined value;
The correction means includes
When the determination unit determines that the amount of change is equal to or greater than a predetermined value, the strength of camera shake correction in a direction different from the range change direction is relatively weaker than when the amount of change is not equal to or greater than a predetermined value. The camera shake correction device according to claim 1 , wherein The control means further includes
The correction means for the range change direction predicted by the prediction means when the image data of the subject expanded by the enlargement means at a magnification ratio equal to or greater than a predetermined value includes characters as the subject constituting unit. The camera shake correction apparatus according to claim 1 , wherein the camera shake correction by the camera is suppressed. Further comprising setting means for setting an operation mode in which the image data of the subject is enlarged at a predetermined magnification and displayed on the display means;
The control means includes
When the operation mode is set by said setting means, any one of claims 1 to 11, characterized in that to suppress the image stabilization by the correcting means predicted the range change direction by said predicting means The camera shake correction device described in 1. The subject includes text having characters as the subject constituting unit,
The operation mode includes a text display mode in which image data of the text is enlarged at a predetermined enlargement ratio and displayed on the display means.
The control means includes
The rule based on at least one of a set of a plurality of characters and an arrangement of the plurality of characters constituting the text specified by the specifying unit when the text display mode is set by the setting unit The camera shake correction apparatus according to claim 13 , wherein the camera shake correction performed by the correction unit in the range change direction predicted by the prediction unit based on the characteristics is suppressed. Claims 1-14, characterized in further further comprising an output control means for outputting to the display means the image data of a subject captured by the imaging unit in a state where the range change direction of the camera shake correction is suppressed by the control means The camera shake correction device according to any one of the above. An image stabilization method using an image stabilization device,
Processing for sequentially performing camera shake correction for correcting camera shake that occurs in image data of a subject that is sequentially imaged by an imaging means;
A process for specifying regularity related to the positions of a plurality of subject constituting units constituting the subject based on image data of the subject imaged by the imaging means;
A process of predicting a range change direction in which an imaging range of the subject imaged by the imaging unit continuously changes based on the specified regularity;
A process for suppressing the image stabilization of the predicted the range change direction,
An image stabilization method comprising: The computer of the image stabilizer
Correction means for sequentially performing camera shake correction for correcting camera shake occurring in image data of a subject that is sequentially imaged by the imaging means;
Specifying means for specifying regularity related to the positions of a plurality of subject constituting units constituting the subject based on image data of the subject imaged by the imaging means;
A predicting unit that predicts a range change direction in which an imaging range of the subject imaged by the imaging unit continuously changes based on the regularity specified by the specifying unit;
Control means for suppressing the image stabilization by the correcting means predicted the range change direction by said prediction means;
A program characterized by functioning as

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