JP2008022517A - Image display apparatus and image display program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To automatically enlarge a photographic subject included in an entire image displayed in one display area and to display it in the other display area. <P>SOLUTION: An image display apparatus is provided with a control portion 6c provided with a dual-screen display mode constituting an active state display area 8a and a non-active state display area 8b in a display screen of a display portion, an image storage portion to record an image data, and an image specification portion 6b to select an image to be displayed in the active state display area 8a from the image data recorded in the image storage portion. The control portion 6c displays the image data specified by the image specification portion 6b in the active state display area 8a by converting it into a display data, detects the photographic subject from the image data specified by the image specification portion 6b, generates an enlarged image or a reduced image of the photographic subject detected from the image data specified by the image specification portion 6b, and displays the enlarged image or the reduced image of the photographic subject generated in the non-active state display area 8b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an image display apparatus and an image display program for displaying an image, and in particular, an image display apparatus capable of dividing a display screen into a plurality of display areas and displaying different images in the respective display areas. The present invention relates to an image display program.

  The digital still camera has a diagonal size of 2 to 3 inches that can display a moving image of the image formed on the image sensor for shooting or display an image that has already been shot and recorded on a memory card or the like. About a liquid crystal display is installed. Such a liquid crystal display has been improved in display performance such as a larger screen, higher definition, and color reproducibility despite the progress of miniaturization of the digital still camera body.

  In recent years, various functions have been proposed using the improvement in display performance of liquid crystal displays. One of the functions is a function called a multi-display function that can display a plurality of images at one time (see, for example, Patent Document 1).

Patent Document 1 discloses a configuration in which a plurality of images are multi-displayed on a display screen of one liquid crystal display so that similar images taken can be compared in detail. Specifically, two display areas are provided so that the short side direction of the display screen is the vertical direction and arranged side by side, and different images are displayed in the respective display areas.
JP 2006-5640 A

  However, when the multi-display function disclosed in Patent Document 1 is used, it is difficult to confirm details because the display area per image is reduced. For this reason, when the entire image is displayed in one display area and a part thereof is enlarged and displayed in the other display area, it is difficult to select a part to be enlarged from the entire image. Also, the enlargement ratio must be specified. When the entire image includes a plurality of parts to be enlarged, a more complicated operation is required.

  In view of the above problems, the present invention enlarges a subject included in an entire image displayed in one display area when the entire image is displayed in one display area and a part thereof is enlarged and displayed in the other display area. It is intended to display in the other display area.

  In order to achieve this object, an image display device according to the present invention includes a display unit having a display screen, and two screens constituting an active display region and an inactive display region in the display screen of the display unit. A control unit having a display mode, an image storage unit in which recording data is recorded, an image instruction unit for selecting an image to be displayed in the active display area from the recording data recorded in the image storage unit, The control unit converts the display data instructed by the image instruction unit into display data and displays the display data in the active display area, and displays the recording data instructed by the image instruction unit or the image instruction unit. The subject is detected from the display data converted from the recording data instructed in step (b), and is changed from the recording data instructed by the image instruction unit or the recording data instructed by the image instruction unit. To generate an enlarged or reduced image of the detected object from the display data, the display the enlarged or reduced image of the generated object in the display area of the inactive state, characterized in that.

  In addition, the control unit converts the display data instructed by the image instruction unit into display data in the active display area and displays the converted data, and displays the recording data instructed by the image instruction unit or the image instruction unit. When a plurality of subjects are detected from the display data converted from the instructed recording data, the recording data instructed by the image instruction unit or the display data converted from the recording data instructed by the image instruction unit An enlarged or reduced image of the detected plurality of subjects may be generated, and the generated enlarged or reduced image of the plurality of subjects may be displayed in parallel in the display area in the inactive state.

  Further, when the control unit detects a plurality of subjects from the recording data instructed by the image instruction unit or the display data converted from the recording data instructed by the image instruction unit, the plurality of detected subjects A subject selection unit that selects one or more subjects from the control unit, and the control unit converts the recording data instructed by the image instruction unit into display data and displays the display data in the display region in the active state. When a plurality of subjects are detected from the recording data instructed by the image instruction unit or display data converted from the recording data instructed by the image instruction unit, the image displayed in the display area in the active state A plurality of detected subjects are instructed to be selectable, and are changed from the recording data instructed by the image instruction unit or the recording data instructed by the image instruction unit. An enlarged or reduced image of one or more subjects selected by the subject selection unit is generated from the displayed display data, and the generated one or more subjects are enlarged or reduced in the inactive display area. An image may be selected and displayed.

  An image display apparatus according to the present invention includes a display unit including a display screen, and a control unit including a two-screen display mode that configures an active display region and an inactive display region within the display screen of the display unit. An image storage unit in which recording data is recorded, and an image sequential instruction unit for sequentially instructing an image to be displayed in the display area in the active state from a part or all of the recording data recorded in the image storage unit, The control unit converts the display data instructed by the image sequential instruction unit into display data and displays the display data in the active display area, and displays the recording data instructed by the image sequential instruction unit or the image sequential An object is detected from the display data converted from the recording data instructed by the instruction unit, and the recording data instructed by the image sequential instruction unit or the image sequential instruction unit is instructed. An enlarged or reduced image of the detected subject is generated from display data converted from recording data, and the generated enlarged or reduced image of the subject is displayed in the display area in the inactive state. Good.

  In addition, the control unit converts the display data instructed by the image sequential instruction unit into display data in the display area in the active state, displays the data, and displays the recording data instructed by the image sequential instruction unit or the image sequential When a plurality of subjects are detected from the display data converted from the recording data instructed by the instruction unit, it is converted from the recording data instructed by the image sequential instruction unit or the recording data instructed by the image sequential instruction unit. Generating enlarged or reduced images of the detected plurality of subjects from the displayed data, and displaying the enlarged or reduced images of the generated subjects in parallel in the display area in the inactive state. Good.

  In addition, the control unit converts the display data instructed by the image sequential instruction unit into display data in the display area in the active state, displays the data, and displays the recording data instructed by the image sequential instruction unit or the image sequential When a plurality of subjects are detected from the display data converted from the recording data instructed by the instruction unit, it is converted from the recording data instructed by the image sequential instruction unit or the recording data instructed by the image sequential instruction unit. Generating enlarged or reduced images of the detected plurality of subjects from the displayed data, and sequentially displaying the generated enlarged or reduced images of the plurality of subjects in the display area in the inactive state. Good.

  Further, the control unit does not detect the subject from the recording data instructed by the image sequential instruction unit or the display data converted from the recording data instructed by the image sequential instruction unit. Display data converted from recording data instructed by the image sequential instruction unit may not be displayed in the display area.

  An image display apparatus according to the present invention includes a display unit including a display screen, and a control unit including a two-screen display mode that configures an active display region and an inactive display region within the display screen of the display unit. An image storage unit in which recording data is recorded, and the control unit detects from the recording data recorded in the image storage unit or display data converted from the recording data recorded in the image storage unit, and the image A subject storage unit for recording an enlarged or reduced image of a subject generated from the recording data recorded in the storage unit or the display data converted from the recording data recorded in the image storage unit; and the display in the active display area A subject instruction unit for selecting an image to be selected from enlarged or reduced images of the subject recorded in the subject storage unit, and the control unit includes the active state An enlarged or reduced image of the subject instructed by the subject instruction unit is displayed in the display area, and recording data including the subject instructed by the subject instruction unit is detected from the recording data recorded in the image storage unit, The detected recording data may be converted into display data and displayed in the inactive display area.

  Further, the control unit displays an enlarged or reduced image of the subject instructed by the subject instruction unit in the display area in the active state, and is instructed by the subject instruction unit from the recording data recorded in the image storage unit. Recording data including a subject that is the same as or similar to the subject may be detected, and the detected recording data may be converted into display data and displayed in the display area in the inactive state.

  The control unit displays an enlarged or reduced image of the subject instructed by the subject instructing unit in the active display area, and a plurality of subject instructing units from the recording data recorded in the image storage unit. When recording data including a subject that is the same as or similar to the instructed subject is detected, the detected recording data is converted into display data and displayed in parallel in the display area in the inactive state. Good.

  The control unit displays an enlarged or reduced image of the subject instructed by the subject instructing unit in the active display area, and a plurality of subject instructing units from the recording data recorded in the image storage unit. When recording data including a subject that is the same as or similar to the instructed subject is detected, the detected recording data is converted into display data and sequentially displayed in the inactive display area. Good.

  An image display apparatus according to the present invention includes a display unit including a display screen, and a control unit including a two-screen display mode that configures an active display region and an inactive display region within the display screen of the display unit. An image storage unit in which recording data is recorded, and the control unit detects from the recording data recorded in the image storage unit or display data converted from the recording data recorded in the image storage unit, and the image A subject storage unit for recording an enlarged or reduced image of a subject generated from the recording data recorded in the storage unit or the display data converted from the recording data recorded in the image storage unit; and the display in the active display area A subject sequential instruction unit for sequentially instructing a part of or all of the enlarged or reduced images of the subject recorded in the subject storage unit. An enlarged or reduced image of the subject instructed by the subject sequential instruction unit in the active display area, and the subject instructed by the subject sequential instruction unit from the recording data recorded in the image storage unit The detected recording data may be converted into display data and displayed on the display area in the inactive state.

  The control unit converts the display data into display data and displays the display data in the display area in the active state, and detects the subject from the recording data when the subject is not detected from the display data. It may be a feature.

  The control unit further includes a detection selection unit that selects whether the subject is detected from recording data or display data, and the control unit converts the recording data into display data in the display region in the active state. And the subject is detected from either the recording data or the display data selected by the detection selection unit.

In addition, the control unit converts the display data into display data and displays the display data in the display area in the active state, and when a subject is not detected from the recording data or the display data,
Information indicating that no subject has been detected may be displayed in the display area in the inactive state.

  Further, the control unit converts the display data into display data and displays the display data in the display area in the active state, detects a subject from the recording data or the display data, and the detected subject is larger than a predetermined size. When the detected subject is smaller than a predetermined size, an enlarged or reduced image of the detected subject is generated from the recording data. This may be a feature.

  Further, the control unit converts the display data into display data and displays the display data in the active display area, detects a subject from the recording data or the display data, and reduces the detected subject from the display data. An image may be generated, and an enlarged image of the detected subject may be generated from the recorded data.

  The control unit further includes a generation selection unit that selects whether to generate a magnified or reduced image of the subject from the recording data or the display data, and the control unit stores the recording data in the active display area. Converting to display data for display, detecting a subject from the recording data or the display data, and enlarging or reducing the detected subject from either the recording data or the display data selected by the generation selection unit An image may be generated.

  In addition, an area selection unit that selects which of the display areas is the display area in the active state, and the control unit selects the display area selected by the area selection unit as the display area in the active state The display area that is not selected by the area selection unit may be the display area in the inactive state.

  Further, the image storage unit may be a storage medium mounting unit to which a storage medium on which recording data is recorded can be attached and detached.

  Further, the display unit may be a display device interface unit to which a display device can be connected.

  In addition, the display unit includes at least two display screens, and one display screen functions as the display region in the active state, and the other display screen functions as the display region in the inactive state. Good.

  The subject may be any one or more of a person, an animal, a plant, a character, a figure, and an object that can recognize a standard shape.

  The image display program of the present invention comprises a computer, image instruction means for selecting recording data, an active display area and an inactive display area in a display screen, and the image in the active display area. The recording data instructed by the instructing means is converted into display data for display, and the subject is detected from the recording data instructed by the image instructing means or the display data converted from the recording data instructed by the image instructing means. Generating an enlarged or reduced image of the detected object from the recording data instructed by the image instruction means or the display data converted from the recording data instructed by the image instruction means, and the display area in the inactive state And functioning as control means for displaying an enlarged or reduced image of the generated subject.

  An image display program according to the present invention comprises a computer, subject instruction means for selecting an enlarged or reduced image of a subject, an active display region and an inactive display region in a display screen, and the active state display. An enlarged or reduced image of the subject instructed by the subject instruction unit is displayed in the area, recording data including the subject instructed by the subject instruction unit is detected, and the detected recording is displayed in the display area in the inactive state. It may be characterized by functioning as a control means for converting data into display data and displaying it.

  In the present invention, an enlarged or reduced image of a subject included in an image displayed in an active display area is displayed in an inactive display area. Therefore, a portion to be enlarged is selected from the entire image or an enlargement ratio is designated. There is an effect that no complicated operation is required.

  In addition, when a plurality of subjects are included in the image displayed in the active display area, enlarged or reduced images of the plurality of subjects are displayed side by side in the inactive display area. There is an effect that a complicated operation for sequentially selecting the parts to be enlarged is not necessary.

  In addition, when a plurality of subjects are included in the image displayed in the active display area, an enlarged or reduced image of the subject selected by the subject selection unit is selectively displayed in the inactive display area. There is an effect that a portion to be enlarged can be easily selected.

  The present invention displays an enlarged or reduced image of a subject included in an image sequentially displayed in an active display area in an inactive display area, so that the entire image and the subject can be viewed simultaneously in a so-called slide show. Play.

  In addition, when a plurality of subjects are included in the images sequentially displayed in the active display area, enlarged or reduced images of the plurality of subjects are displayed in parallel in the inactive display area, so that the entire image is displayed in the slide show. The effect is that you can view multiple subjects at the same time.

  In addition, when a plurality of subjects are included in the images sequentially displayed in the active display area, enlarged or reduced images of the plurality of subjects are sequentially displayed in the inactive display area. It is possible to view a plurality of subjects that are displayed sequentially.

  In addition, when the image to be displayed next in the active display area does not include the subject, the image to be displayed next is not displayed in the active display area. In other words, there is an effect that an image in which there is no subject to be noticed is not displayed.

  The present invention displays an image including an enlarged or reduced image of a subject displayed in an active display area in a non-active display area. Therefore, an image including a subject displayed in an active display area can be easily obtained. There is an effect that it can be detected.

  In addition, since an image including a subject that is the same as or similar to the enlarged or reduced image of the subject displayed in the active display region is displayed in the inactive display region, it is the same as the subject displayed in the active display region. Alternatively, it is possible to easily detect an image including a similar subject.

  In addition, since an image including a subject that is the same as or similar to the enlarged or reduced image of the subject displayed in the active display region is displayed side by side in the inactive display region, the subject displayed in the active display region There is an effect that a plurality of images including the same or similar subject can be confirmed simultaneously.

  In addition, since an image including a subject that is the same as or similar to the enlarged or reduced image of the subject displayed in the active display region is sequentially displayed in the inactive display region, the subject displayed in the active display region There is an effect that a plurality of images including the same or similar subject can be easily detected.

  The present invention displays the image including the enlarged or reduced image of the subject sequentially displayed in the active display area in the inactive display area, and thus has an effect that the subject and the whole image can be simultaneously viewed in the slide show.

  In addition, since the subject is detected from the recording data when the subject is not detected from the display data in the detection of the subject, the time required for detecting the subject by detecting the subject with priority from the display data with a smaller amount of data. The effect of shortening.

  In addition, since the subject is detected from either the recording data or the display data selected by the detection selection unit in the detection of the subject, the time required for detecting the subject is reduced by detecting the subject from the display data with a smaller amount of data. In addition, there is an effect that it is possible to select whether to improve the detection accuracy of the subject by detecting the subject from the recording data having a larger amount of data.

  In addition, when the subject is not included in the image displayed in the active display area, information indicating that the subject has not been detected is displayed in the inactive display area. There is an effect that it is clearly notified that the subject is not included in the displayed image.

  Further, when generating an enlarged or reduced image of a subject, the subject is generated from the display data when the subject is larger than a predetermined size, and the subject is generated from the recording data when the subject is smaller than the predetermined size. When the subject is larger than the size, the subject is generated from the display data with a smaller amount of data, thereby shortening the time required to generate the subject. When the subject is smaller than the predetermined size, the subject is created from the recording data having a larger amount of data. As a result, the object generation accuracy is improved.

  In addition, since a reduced image of the subject is generated from the display data and an enlarged image of the subject is generated from the recording data in the generation of the enlarged or reduced image of the subject, the display with a smaller amount of data is generated in the generation of the reduced image that tends to lower the resolution. By generating the subject from the data, there is an effect that the time required for generating the subject is shortened.

  In addition, since the subject is generated from either the recording data or the display data selected by the generation selection unit in the generation of the enlarged or reduced image of the subject, the subject is generated by generating the subject from the display data having a smaller data amount. It is possible to select whether to shorten the time required to improve the generation accuracy of the subject by generating the subject from recorded data having a larger amount of data.

  In addition, since the display area selected by the area selection unit is the active display area, and the display area not selected by the area selection unit is the inactive display area, the active display area and the inactive state display area are displayed. There is an effect that the display area can be easily replaced.

  The image storage unit may be a memory built in the image display device or a removable memory card. If it is a memory card or the like, the effects of the present invention can be achieved even for images taken with other devices.

  The display unit may be provided in the image display device, or the image display device may be provided with a display device interface unit so that an external display device can be connected. If the display device interface is provided, the entire image and the subject can be simultaneously viewed on a large screen of an external large display device such as a plasma television.

  Further, the display unit may divide one display screen into two display areas, or may include two display screens. If two display screens are provided, the display screen can be arranged with an optimum layout for the image display device.

  The subject may be any one or more of a person, an animal, a plant, a character, a figure, and an object that can recognize a standard shape. Since the part to be enlarged can be selected from a plurality of categories, there is an effect that it is possible to select a subject more suited to the user's preference.

(Embodiment 1)
(1. Configuration)
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, when the present invention is applied to a digital still camera that is an image display device and an image is displayed using a playback function, a subject is detected from one image, an image of only the subject, and its image A case where two images of the original image including the subject are displayed simultaneously will be described.

  FIG. 1 is a block diagram showing a circuit configuration of a digital still camera according to the present embodiment. When the user presses the shutter button 13 while the mode dial 12 is set to the photographing mode, the CPU 7 detects this and instructs the CCD (Charge Coupled Device) drive circuit 3 to perform the photographing operation. The light collected by the lens 1 enters the CCD 2 driven by the CCD drive circuit 3 and is converted into an image signal which is an electrical signal. The image signal generated by the CCD 2 is converted into image data which is a digital signal by the A / D conversion circuit 4 and recorded in an SDRAM (Synchronous Dynamic Random Access Memory) 5. The image data recorded in the SDRAM 5 is recorded in the memory card 11 inserted into the card connector 10 after being subjected to predetermined processing by the signal processing unit 6 a of the image signal processing circuit 6.

  Next, when the user selects an image with the image selection button 14 while the mode dial 12 is set to the reproduction mode, the CPU 7 detects it and selects the image on the image instruction unit 6b of the image signal processing circuit 6. The display of the image selected by the button 14 is instructed. The image instructing unit 6 b reads out the image recording data instructed from the memory card 11 inserted in the card connector 10 and outputs it to the control unit 6 c of the image signal processing circuit 6. The control unit 6c configures an active display area 8a and an inactive display area 8b in the display screen of the liquid crystal display 8, and displays the recording data output from the image instruction unit 6b in the active display area 8a. The image is converted into data and displayed, and the image of the subject detected from the recording data output from the image instruction unit 6b is displayed in the display area 8b in the inactive state. When a plurality of subjects are detected from the recording data output from the control unit 6c, the subject to be displayed in the inactive display area 8b can be selected by the subject selection button 15.

  The mode dial 12 is a rotary dial, and in addition to the shooting mode and the playback mode, a scene-specific shooting mode, an aperture priority shooting mode, a shutter speed priority shooting mode, an auto shooting mode, and a program, which are sub-modes of the shooting mode The shooting mode, the moving image shooting mode, and the like can be switched.

  The image selection button 14 and the subject selection button 15 are cross keys for selecting objects displayed in parallel. The menu selection button 16 includes a menu button for displaying an item that can be set in each mode, a cross key for selecting an item that can be set, and a determination button for determining the selected item. Switching between the two-screen display mode or the one-screen display mode that configures the display area 8a in the active state and the display area 8b in the inactive state in the display screen of the liquid crystal display 8 is performed by the mode dial 12 to the playback mode. This is done by operating the menu selection button 16 when it is set. The cross key of the image selection button 14, the subject selection button 15, and the menu selection button 16 can be shared by one cross key.

The A / D conversion circuit 4 is a CDS (Correlated Double Sampling) circuit that removes noise components of an image signal, an AGC (Automatic Gain Control) amplifier that adjusts the size of the image signal, and an A / D that converts an analog signal into a digital signal. It is an analog LSI including a D converter. The image signal processing circuit 6 is one or a plurality of digital LSIs and may incorporate a CPU 7.
(2. Operation)
(2.1 Directory structure)
A directory structure of the memory card 11 in which recording data is recorded will be described. FIG. 2 is a diagram showing an example of the directory structure of recording data recorded on the memory card 11. The root 21 is the highest directory in the directory structure, and all directories and files are recorded from this hierarchy. The DCIM 22 is a directory defined by a DCF (Design rule for Camera File system) standard. 100_PANA 23 and 101_PANA 25 are directories for recording recording data, and are created in a layer below the DCIM 22. According to the DCF standard, a directory name is defined to be composed of three digits from 100 to 999 and five free characters. In this directory configuration example, 100 and 101 are used as three-digit numbers, and _PANA is used as five free characters. 100_PANA23 recorded in the lower layer P1000001. jpg to P1000003. jpg24 and 101_PANA25 recorded in the lower layer P1010001. jpg 26 is recording data. According to the DCF standard, a file name of recording data is defined to be composed of four free characters and a four-digit number from 0001 to 9999. In this directory configuration example, P100 and P101 are used as four free characters, and 0001 to 0003 are used as four-digit numbers. PRIVATE 27 is a directory for recording a file management information file 28 described later.

  FIG. 3 is a diagram showing a coordinate system of file management information and recording data. FIG. 3A shows file management information. The file management information is recorded as a file management information file 28 in the PRIVATE 27 directory of the memory card 11. The file number is a part defined by a 4-digit number in the file names of the recording data 24 and 26. The directory number is a part defined by a three-digit number in the directory names of the directories 23 and 25 for recording image files.

  The management information is recorded when the subject has already been detected for the recorded data. The management information to be recorded is the number, position coordinates, and size of the subject detected from the recorded data. FIG. 3B is a diagram illustrating a coordinate system of the recording data 31. For the recording data 31, a coordinate system having an x axis in the horizontal direction and a y axis in the vertical direction with the lower left as the origin is defined. The size of the recording data 31 is 3000 dots in the x-axis direction and 2000 dots in the y-axis direction. When a human face 32 is detected as a subject, a subject detection frame 33 is obtained. The width of the subject detection frame 33 is defined as H dots and the height is defined as V dots. The width H and height V of the subject detection frame 33 vary depending on the size of the detected subject.

  The number of subjects in the management information is the number of human faces 32 that are subjects detected from the recording data 31. The position coordinates (x, y) of the subject in the management information are the position coordinates of the lower left point 34 of the subject detection frame 33. The size (H, V) of the subject in the management information is the width H and height V of the subject detection frame 33.

For example, in the recording data management information of the file number 0001 and the directory number 100, the number of subjects is 1, the location coordinates of the subjects are (1514,867), and the size of the subject is (599,734). / (Slash) is a separator that separates the number of subjects, position coordinates (x, y), and size (H, V). The management information of the recording data of the file number 0002 and the directory number 100 is only the separator because no subject has been detected from the recording data or no subject has been detected from the recording data. The management information of the recording data of the file number 0001 and the directory number 101 is that the number of subjects is 2, the location coordinates of the first subject are (976, 836), the location coordinates of the second subject are (1899, 847), The size of one subject is (477,509), and the size of the second subject is (456,497).
(2.2 Display operation)
In the two-screen display mode, an operation when an enlarged image of a subject detected from an image displayed in the active display area 8a is displayed in the inactive display area 8b will be described. Depending on the size of the subject detected from the image displayed in the display area 8a in the active state, a reduced image may be used instead of the enlarged image. However, in this embodiment, the size of the subject is relatively small. The case where an enlarged image is displayed in the display area 8b in the inactive state will be described.

  FIG. 4 is a flowchart showing an operation when an enlarged image of a subject detected from an image displayed in the active display area 8a is displayed in the inactive display area 8b. The whole image to be displayed in the active display area 8a is selected by the image selection button 14 (S101). The selected entire image is displayed in the active display area 8a. Which display area is in the active state can be visually determined by highlighting around the display area 8a in the active state.

  A subject is detected from the selected entire image (S102). There are various methods for detecting the subject. Here, a case where the subject to be detected is a human face will be described. There are various methods for detecting a human face. For example, a feature amount is extracted from various human face image groups sampled and pre-sampled image groups, an appropriate classifier is learned from the feature amounts, and the learning result is controlled by the image signal processing circuit 6. There is a method of realizing detection of a human face by the control unit 6c by giving it to a classifier (not shown) in the unit 6c. Classifiers include decision trees, NN (Neural Network), SVM (Support Vector Machine), and the like. In addition to a method using a classifier, for example, there is a human face detection method such as a template matching method.

  When the subject is detected (S102), the number, position coordinates, and size of the subject detected from the selected whole image are recorded in the file management information file 28 as management information of the whole image. The entire image in which the management information is recorded in the file management information file 28 does not need to detect the subject (S102) from the next time.

  When the subject is detected from the selected entire image after the subject detection (S102) is performed (Yes in S103), an enlarged image of the detected subject is displayed in the display area 8b in the inactive state ( S104). FIG. 5 is a diagram illustrating a display example of the liquid crystal display 8 when an enlarged image of the detected subject is displayed in the display area 8b in the inactive state. The selected whole image including the sun, the mountain, and the human face is displayed in the active display area 8a highlighted around. In the display area 8b in the inactive state, a human face as a detected subject is displayed.

  When no subject is detected from the selected entire image after the subject detection (S102) has been performed (No in S103), a display indicating that no subject has been detected in the inactive display area 8b. (S105). FIG. 6 is a diagram showing a display example of the liquid crystal display 8 when the inactive state display area 8b displays that no subject has been detected. The selected whole image including the sun and mountains is displayed in the active display area 8a highlighted around the periphery. In the inactive display area 8b, characters “Not Detected” indicating that no subject has been detected are displayed.

  After a subject is detected (S102), when a plurality of subjects are detected from the selected entire image (Yes in S103), the enlarged images of the detected subjects are displayed in an inactive state display area 8b. Can be displayed in two ways (S104). FIG. 7 is a diagram showing a display example of the liquid crystal display 8 when enlarged images of a plurality of detected subjects are displayed in the display area 8b in an inactive state.

  FIG. 7A is a diagram illustrating a first display method for displaying enlarged images of a plurality of detected subjects in the display area 8b in an inactive state. The selected whole image including the sun, the mountain, and two human faces 8c and 8d is displayed in the active display area 8a highlighted around. On the human face 8d, a subject selection frame 8e indicating that it is selected is displayed. The subject selection frame 8e can be switched to the human face 8c by the subject selection button 15. In the display area 8b in the inactive state, an enlarged image of the human face 8d selected by the subject selection button 15 and displaying the subject selection frame 8e is displayed.

  Although FIG. 7A shows an example in which the human face 8d as one subject is selected, a plurality of subjects may be selected by the subject selection button 15. FIG. 7B is a diagram showing a state in which a plurality of subjects are selected in the first display method of displaying enlarged images of a plurality of detected subjects in the display area 8b in an inactive state. In the active display area 8a highlighted in the periphery, the selected whole image including the sun, the mountain, and the three human faces 8c, 8d, and 8f is displayed. On the human faces 8c and 8d, a subject selection frame 8e indicating that the person is selected is displayed. In the display area 8b in the inactive state, enlarged images of the human faces 8c and 8d selected by the subject selection button 15 and displaying the subject selection frame 8e are displayed in parallel. The size of the enlarged images of the human faces 8c and 8d displayed in the display area 8b in the inactive state is adjusted according to the size of the display area 8b in the inactive state.

  FIG. 7C is a diagram showing a second display method for displaying enlarged images of a plurality of detected subjects in the display area 8b in an inactive state. In the active display area 8a highlighted around, the same whole image as that shown in FIG. 7A is displayed. On the human faces 8c and 8d, the subject selection frame 8e indicating that it is selected is not displayed. In the inactive state display area 8b, human faces 8c and 8d, which are a plurality of detected subjects, are displayed in parallel. Similarly to FIG. 7B, the size of the enlarged images of the human faces 8c and 8d displayed in the display area 8b in the inactive state is adjusted according to the size of the display area 8b in the inactive state. .

  Whether a magnified image of the subject is displayed by the first display method or a magnified image of the subject is displayed by the second display method when a plurality of subjects are detected from the selected entire image (Yes in S103) Can be switched by the menu selection button 16.

When an instruction to display the next whole image is given by the menu selection button 16 (Yes in S106), the operations from S101 to S106 are repeated for the next whole image. When an instruction to end is given by the menu selection button 16 (No in S106), an enlarged image of the subject detected from the image displayed in the display area 8a in the active state is displayed in the display area 8b in the inactive state. End the operation.
(Embodiment 2)
(1. Configuration)
Hereinafter, a second embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, when the present invention is applied to a digital still camera that is an image display device and a slide show that sequentially displays images using a playback function is executed, the subject is detected from one image and the subject is detected. A case will be described in which two images, that is, only an image and an original image including the subject are simultaneously displayed.

FIG. 8 is a block diagram illustrating a circuit configuration of the digital still camera according to the present embodiment. The difference from FIG. 1, which is a block diagram showing the circuit configuration of the digital still camera in the first embodiment, is that the image instruction unit 6b of the image signal processing circuit 6 includes an image sequential instruction unit 6d. Other configurations are the same as those in FIG.
(2. Operation)
(2.1 Display operation)
In the two-screen display mode, an operation when sequentially displaying an enlarged image of a subject detected from an image displayed in the active display area 8a in the inactive display area 8b will be described. Depending on the size of the subject detected from the image displayed in the display area 8a in the active state, a reduced image may be used instead of an enlarged image. However, as in the first embodiment of the present invention, A case will be described in which a magnified image is displayed in the inactive display area 8b where the size of the subject is relatively small.

  FIG. 9 is a flowchart showing an operation when the enlarged image of the subject detected from the image displayed in the active display area 8a is sequentially displayed in the inactive display area 8b. The image sequential instruction unit 6d selects the entire image to be displayed first (S201). The selected entire image is not yet displayed in the active display area 8a. Which display area is in the active state can be visually determined by highlighting the periphery of the display area 8a in the active state, as in the first embodiment of the present invention.

  It is confirmed whether or not the subject has been detected for the selected entire image (S202). When the management information of the selected entire image is recorded in the file management information file 28 recorded in the PRIVATE27 directory of the memory card 11, the subject is detected as being detected (Yes in S202). (S203) is not performed. On the other hand, when the management information of the selected entire image is not recorded in the file management information file 28, the subject is not detected (No in S202), and the subject is detected (S203).

  The subject detection (S203) shows an operation when displaying an enlarged image of the subject detected from the image displayed in the display region 8a in the active state in the display region 8b in the inactive state in the first embodiment. Since this is the same as the subject detection (S102) of FIG.

  When the subject is detected (Yes in S202) and the subject is detected from the selected whole image, and when the subject is detected from the whole image selected in the subject detection (S203), the selected subject is selected. The entire image is displayed in the active display area 8a (S204). Subsequently, an enlarged image of the subject detected simultaneously or simultaneously is displayed in the inactive display area 8b (S205). The display example of the liquid crystal display 8 at this time is a diagram showing a display example of the liquid crystal display 8 when the enlarged image of the detected subject in the first embodiment is displayed in the display area 8b in the inactive state. Since this is the same as 5, the description is omitted.

  On the other hand, when a subject is detected (Yes in S202) and no subject is detected from the selected whole image, and when no subject is detected from the whole image selected in subject detection (S203), The selected entire image is not displayed in the active display area 8a (S204). Further, an enlarged image of the detected subject cannot be displayed in the inactive display area 8b (S205). That is, for the selected whole image in which no subject is detected, the selected whole image is not displayed (S204) and the enlarged image of the detected subject is not displayed (S205).

  When a subject is detected (Yes in S202) and a plurality of subjects are detected from the selected whole image, and when a plurality of subjects are detected from the whole image selected in subject detection (S203) The detected enlarged images of the plurality of subjects can be displayed on the display area 8b in the inactive state by two methods (S205).

  FIG. 10 is a diagram showing a first display method of the liquid crystal display 8 when enlarged images of a plurality of detected subjects are displayed in the display area 8b in an inactive state. In the active display area 8a highlighted in the periphery, the selected entire image including the faces 8c, 8d, and 8f of the three humans is displayed.

  FIG. 10A is a diagram showing a first display state for the selected whole image, and FIG. 10B is a diagram showing a second display state for the selected whole image. (C) is a figure which shows the 3rd display state about the selected whole image. The first human face 8c and the second human face are displayed in the inactive display area 8b in a state where the selected whole image is displayed in the active display area 8a according to an instruction from the image sequential instruction unit 6d. 8f and a third human face 8d are sequentially displayed. A display area 8a in the active state displays a subject selection frame 8e indicating that the human face displayed in the display area 8b in the inactive state is selected.

  The order in which the enlarged images of the subject are sequentially displayed in the inactive display area 8b according to the instruction from the image sequential instruction unit 6d may be sequentially displayed according to the detected position coordinates of the subject. You may display sequentially according to the magnitude | size of a to-be-photographed object. Moreover, you may display at random.

  The second display method of the liquid crystal display 8 when the enlarged images of the detected plurality of subjects are displayed in the display area 8b in the inactive state is the same as the detected enlarged images of the plurality of subjects in the first embodiment. Since this is the same as FIG. 7C, which is a diagram showing a second display method for displaying in parallel in the display area 8b in the inactive state, description thereof is omitted.

  When a subject is detected (Yes in S202) and a plurality of subjects are detected from the selected whole image, and when a plurality of subjects are detected from the whole image selected in subject detection (S203) The menu selection button 16 can be used to switch between displaying the subject by the first display method and displaying the subject by the second display method.

  The image sequential instruction unit 6d confirms whether or not all the images have been displayed (S206). When the display of all images is not completed (No in S206), the entire image to be displayed next is selected (S201), and the operations from S201 to S206 are repeated. On the other hand, when all the images have been displayed (Yes in S206), the enlarged images of the subject detected from the image displayed in the active display area 8a are sequentially displayed in the inactive display area 8b. End the operation.

The image sequential instruction unit 6d may display all the images recorded on the memory card 11, or may display only a predetermined image group. Further, the image sequential instruction unit 6d may display the images recorded on the memory card 11 in ascending or descending order of shooting date and time, or may display them randomly.
(Embodiment 3)
(1. Configuration)
Hereinafter, a third embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, when the present invention is applied to a digital still camera which is an image display device and an image is displayed using a playback function, an image of only an already detected object and an original image including the object are displayed. A case where two images are displayed simultaneously will be described.

  FIG. 11 is a block diagram illustrating a circuit configuration of the digital still camera according to the present embodiment. The difference from FIG. 1 which is a block diagram showing the circuit configuration of the digital still camera in the first embodiment is that the image instruction unit 6b of the image signal processing circuit 6 includes a subject instruction unit 6e, and image signal processing. A subject storage unit 17 that records an enlarged or reduced image of the subject detected by the control unit 6c of the circuit 6; Other configurations are the same as those in FIG.

  Although the subject storage unit 17 is separately provided in the present embodiment, the subject storage unit 17 may use a part of the storage area of the memory card 11 or the image signal processing circuit 6. An embedded memory (not shown) may be used.

When the user selects a subject with the subject selection button 15 while the mode dial 12 is set to the playback mode, the CPU 7 detects that and uses the subject selection button 15 in the subject instruction section 6e of the image signal processing circuit 6. An instruction to display an enlarged image of the selected subject is given. The subject instruction unit 6 e reads an enlarged or reduced image of the subject instructed from the subject storage unit 17 and outputs it to the control unit 6 c of the image signal processing circuit 6. The control unit 6c configures an active display region 8a and an inactive display region 8b in the display screen of the liquid crystal display 8, and enlarges the subject output from the subject instruction unit 6e to the active display region 8a. The reduced image is displayed, and the recording data of the entire image including the subject output from the subject instruction unit 6e is converted into display data and displayed in the inactive display area 8b. When a plurality of recording data including the subject output from the subject instruction unit 6e is detected, the entire image displayed in the display area 8b in the inactive state can be switched by the image selection button 14.
(2. Operation)
(2.1 Display operation)
In the two-screen display mode, an operation when the entire image including the image of the subject displayed in the active display area 8a is displayed in the inactive display area 8b will be described.

  FIG. 12 is a diagram showing file management information in the present embodiment. The difference from FIG. 3A, which is also a diagram showing file management information, is that an object number item is added.

  For example, the record data management information of the file number 0001 and the directory number 100 indicates that the number of subjects is 1, the subject position coordinates are (1514,867), and the subject size is (599,734). However, a subject number 01_01 is given to the subject detected from the recorded data. Here, 01 before _ (underscore) is the first detected subject, and 01 after _ (underscore) is the first image including the first detected subject. Show.

  The management information of the recording data of the file number 0001 and the directory number 101 is that the number of subjects is 2, the location coordinates of the first subject are (976, 836), the location coordinates of the second subject are (1899, 847), This indicates that the size of one subject is (477, 509) and the size of the second subject is (456, 497). The subject detected from this recording data is the second detected. A subject number of 02_02 indicating a second image including the subject and 03_02 indicating a second image including the third detected subject is given.

  Here, the first image including the second detected subject and the third detected subject is the recording data of the file number 0003 and the directory number 100 and is shown as the subject numbers 02_01 and 03_01. . That is, the second detected subject included in the recording data of file number 0003 and directory number 100, and the same or similar subject as the third detected subject are recorded data of file number 0001 and directory number 101. Is also included.

  FIG. 13 is a flowchart showing an operation when displaying the entire image including the image of the subject displayed in the active display area 8a in the inactive display area 8b. The subject selection button 15 selects an image of a subject to be displayed in the active display area 8a (S301). The image of the selected subject is displayed in the active display area 8a. Which display region is in the active state is visually determined by highlighting the periphery of the display region 8a in the active state, as in the first and second embodiments of the present invention. I can judge.

  The entire image including the image of the selected subject is detected (S302). The entire image including the image of the selected subject can be detected by referring to the file management information.

  After the entire image is detected (S302), the entire image including the selected subject is displayed in the inactive display area 8b (S303). FIG. 14 is a diagram illustrating a display example of the liquid crystal display 8 when the detected whole image is displayed in the display area 8b in the inactive state. In the active display area 8a highlighted around, a human face as a selected subject is displayed. In the display area 8b in the inactive state, the detected whole image including the sun, the mountains, and the human face as the selected subject is displayed.

  When a plurality of whole images including a subject that is the same as or similar to the selected subject is detected after the whole image is detected (S302), the detected plurality of whole images are displayed in an inactive state display area. It can be displayed in two ways in 8b (S303). Here, when a plurality of whole images are detected from the image of the selected subject, for example, the second detected subject is selected in FIG. 12 showing the file management information in the present embodiment. When the subject is the selected subject, the whole image including the selected subject corresponds to the recording data of the file number 0003 and the directory number 100, and the recording data of the file number 0001 and the directory number 101.

  FIG. 15 is a diagram illustrating a first display method for displaying a plurality of detected whole images in the display area 8b in an inactive state. FIG. 15A is a diagram showing a state in which a plurality of detected whole images can be selected by the image selection button 14. An enlarged image of the human face that is the selected subject is displayed in the active display area 8a highlighted in the periphery. In the display area 8b in the inactive state, the two detected whole images 8g and 8h are displayed in parallel. An image selection frame 8i indicating that it is selected is displayed on the detected whole image 8g. The image selection frame 8 i can be switched to the detected whole image 8 h by the image selection button 14. FIG. 15B shows that only the whole image 8g is displayed in an inactive state by operating the image selection button 14 when the image selection frame 8i indicating that the whole image 8g is selected is displayed. It is a figure which shows the state displayed on the area | region 8b.

  FIG. 16 is a diagram showing a second display method for displaying a plurality of detected whole images in the display area 8b in an inactive state. An enlarged image of the human face that is the selected subject is displayed in the active display area 8a highlighted in the periphery. FIG. 16A is a diagram illustrating a state in which the first entire image including the human face that is the selected subject is displayed in the display area 8b in the inactive state. FIG. 15B is a diagram showing a state in which the second whole image including the human face that is the selected subject is displayed in the display area 8b in the inactive state.

  The first whole image including the human face that is the selected subject includes human faces 8d and 8f in addition to the human face 8c that is the selected subject. The second entire image including the human face that is the selected subject includes a human face 8f in addition to the human face 8c that is the selected subject. The first whole image including the human face that is the selected subject corresponds to, for example, the recording data of the file number 0003 and the directory number 100 in FIG. 12, which is a diagram showing the file management information in the present embodiment. . The second entire image including the human face that is the selected subject corresponds to, for example, the recording data of the file number 0001 and the directory number 101 in FIG. 12 showing the file management information in the present embodiment. .

  The image selection button 14 can be used to switch which of the first and second whole images including the human face that is the selected subject is displayed in the inactive display area 8b.

When the menu selection button 16 instructs to display the next subject image (Yes in S304), the operations from S301 to S304 are repeated for the next subject image. When an instruction to end is given by the menu selection button 16 (No in S304), an operation of displaying the entire image including the image of the subject displayed in the display area 8a in the active state in the display area 8b in the inactive state. finish.
(Embodiment 4)
(1. Configuration)
Hereinafter, a fourth embodiment of the present invention will be described in detail with reference to the drawings. In this embodiment, when the present invention is applied to a digital still camera that is an image display device and a slide show that sequentially displays images using a playback function is executed, an image of only an already detected subject and the subject are displayed. A case where two images of the original image including the image are displayed simultaneously will be described.

  FIG. 17 is a block diagram illustrating a circuit configuration of the digital still camera according to the present embodiment. 1 is a block diagram showing the circuit configuration of the digital still camera according to the first embodiment. The difference is that the image instruction unit 6b of the image signal processing circuit 6 includes a subject sequential instruction unit 6f and the image signal. A subject storage unit 17 that records an enlarged or reduced image of the subject detected by the control unit 6c of the processing circuit 6; Other configurations are the same as those in FIG.

As in the third embodiment of the present invention, the subject storage unit 17 may use a part of the storage area of the memory card 11 or an embedded memory (not shown) in the image signal processing circuit 6. May be used.
(2. Operation)
(2.1 Display operation)
In the two-screen display mode, an operation when sequentially displaying the entire image including the image of the subject displayed in the active display area 8a in the inactive display area 8b will be described.

  FIG. 18 is a flowchart showing an operation when the whole image including the image of the subject displayed in the active display area 8a is sequentially displayed in the inactive display area 8b. The subject sequential instruction unit 6f selects an image of the subject to be displayed first (S401). The image of the selected subject is displayed in the active display area 8a. Which display region is in the active state is visually determined by highlighting the periphery of the display region 8a in the active state, as in the first, second, and third embodiments of the present invention. it can.

  For the selected subject image, the entire image is detected (S402). The whole image detection (S402) is a flowchart showing the operation when displaying the whole image including the image of the subject displayed in the display area 8a in the active state in the display area 8b in the inactive state in the third embodiment. This is the same as the entire image detection (S302) in FIG.

  When the entire image is detected (S402) and the entire image including the image of the selected subject is detected, the detected entire image is displayed in the inactive display area 8b (S403). The display example of the liquid crystal display 8 at this time is a diagram showing a display example of the liquid crystal display 8 when the detected whole image in the third embodiment is displayed in the display area 8b in the inactive state. Since it is the same, description is abbreviate | omitted.

  When the whole image is detected (S402) and a plurality of whole images including the same or similar subject as the selected subject are detected, the plurality of detected whole images are removed according to the instruction of the subject sequential instruction unit 6f. The images are sequentially displayed in the active display area 8b. For example, FIG. 16 is a diagram illustrating a second display method for displaying a plurality of detected whole images in the display area 8b in an inactive state, and the first whole image including a human face as a selected subject in FIG. FIG. 16A is a diagram showing a state where is displayed in the display area 8b in the inactive state, and the display area 8b in which the second entire image including the human face that is the selected subject is in the inactive state. FIG. 16B, which is a diagram showing the state displayed on the screen, is sequentially displayed.

  The order in which the entire images detected in the inactive display area 8b are sequentially displayed according to the instruction from the subject sequential instruction unit 6f may be sequentially displayed according to the detected position coordinates of the subject. You may display sequentially according to the size of the subject. Moreover, you may display at random.

  The subject sequential instruction unit 6f confirms whether or not the display of all subjects has been completed (S404). When the display of all subjects has not been completed (No in S404), the subject to be displayed next is selected (S401), and the operations from S401 to S404 are repeated. On the other hand, when the display of all the subjects has been completed (Yes in S404), the operation of sequentially displaying the entire image including the image of the subject displayed in the display region 8a in the active state in the display region 8b in the inactive state. finish.

The subject sequential instruction unit 6f may display all the subjects recorded in the subject storage unit 17, or may display only a predetermined subject group. The subject sequential instruction unit 6f may display the entire image including the subject in ascending or descending order of shooting date / time, or may display them randomly.
(Magnification and reduction of the subject)
In the first to fourth embodiments of the present invention, the case where the enlarged image of the subject is generated has been described. However, the reduced image of the subject may be generated, which will be described here. FIG. 19 is a schematic diagram for explaining enlargement and reduction of a subject.

  FIG. 19A shows the size of the recording data. When the number of pixels of the CCD 2 is about 6 million, the size of the recording data is about 3000 dots horizontally and 2000 dots vertically. On the other hand, the number of pixels of the liquid crystal display 8 having a diagonal size of 2 to 3 inches mounted on the digital still camera is about 240,000. FIG. 19B is a diagram showing the size of the display data displayed in the single screen display mode with the short side direction of the display screen as the vertical direction. The size of the display data is about 600 dots horizontally and 400 dots vertically. FIG. 19C is a diagram showing the size of display data displayed in the two-screen display mode with the long side direction of the display screen as the vertical direction. An entire image is displayed in the display area 8a in the active state, and an enlarged or reduced image of the subject is displayed in the display area 8b in the inactive state. The size of the entire image and the enlarged or reduced image of the subject is about 400 dots horizontally and 300 dots vertically, respectively.

  There are three methods for generating the human face 8l that is an enlarged or reduced image of the subject displayed in the display area 8b in the inactive state. The first generation method is a method (dotted line A-A ′) for generating from the human face 8 d included in the recording data. The second generation method is a method (dotted line B-B ′) for generating from the human face 8 j included in the display data displayed in the one-screen display mode. The third generation method is a method (dotted line C-C ′) for generating from the human face 8k included in the entire image displayed in the two-screen display mode.

  In the example shown in FIG. 19, the first generation method (dotted line AA ′) is reduced, and the second generation method (dotted line BB ′) and the third generation method (dotted line CC ′) are reduced. It becomes expansion. However, enlargement or reduction varies depending on the number of pixels of the CCD 2, the number of pixels of the liquid crystal display 8, the size of the subject, and the method of generating the subject image.

  FIG. 20 is a schematic diagram for explaining that enlargement and reduction change depending on the size of the subject. FIG. 20A is a diagram showing the size of the display data displayed in the one-screen display mode with the short side direction of the display screen as the vertical direction, as in FIG. 19B. FIG. 20B is a diagram showing the size of the display data displayed in the two-screen display mode with the long side direction of the display screen as the vertical direction, similarly to FIG. 19C.

  In the example shown in FIG. 20, since the human face 8j included in the display data displayed in the one-screen display mode is larger than the example shown in FIG. 19, in the second generation method (dotted line BB ′). Will also be reduced. On the other hand, in the third generation method (dotted line CC ′), as long as the two-screen display mode is configured by equally dividing the display screen of the liquid crystal display 8 as shown in FIG. The size of the human face 8l, which is the image of the subject displayed in the display area 8b, is the same as or larger than the size of the human face 8k included in the entire image displayed in the display area 8a in the active state.

FIG. 20C shows the size of the display data when the inverted L-shaped information display area 8m is provided in the display area 8b in the inactive state in the two-screen display mode in which the long side direction of the display screen is the vertical direction. FIG. In the information display area 8m, for example, information related to the person 8l that is an image of the subject displayed in the display area 8b in the inactive state is displayed. Since the human face 8l that is the image of the subject displayed in the display area 8b in the inactive state is smaller than that in FIG. 20B, it is reduced even in the third generation method (dotted line CC ′). .
(Other embodiments)
(1. Object detection)
When the subject is not detected from the display data of the selected image, the subject may be detected from the recording data. By detecting the subject with priority from display data with a smaller amount of data, there is an effect of reducing the time required for detecting the subject.

Further, a detection selection unit may be further provided so that it is possible to select whether to detect the subject from the recording data of the selected image or to detect the subject from the display data of the selected image. Select whether to reduce the time required to detect the subject by detecting the subject from display data with a smaller amount of data, or improve the detection accuracy of the subject by detecting the subject from recorded data with a larger amount of data There is an effect that can be done.
(2. Subject generation)
When the detected subject is larger than the predetermined size, an enlarged or reduced image of the subject is generated from the display data. When the detected subject is smaller than the predetermined size, an enlarged or reduced image of the subject is generated from the recording data. Good. When the subject is larger than the predetermined size, the time required to generate the enlarged or reduced image of the subject is reduced by generating the enlarged or reduced image of the subject from the display data with a smaller amount of data, and the subject is smaller than the predetermined size. In some cases, an enlarged or reduced image of a subject is generated from recorded data having a larger amount of data, thereby improving the accuracy of generating an enlarged or reduced image of the subject.

  Further, a generation selection unit is further provided so that it is possible to select whether to generate an enlarged or reduced image of the subject from the recording data of the selected image or to generate an enlarged or reduced image of the subject from the display data of the selected image. It may be. Reduce the time required to generate an enlarged or reduced image of a subject from display data with a smaller amount of data, or create an enlarged or reduced image of an object from recorded data with a larger amount of data. This produces an effect that the generation accuracy of the enlarged or reduced image of the subject can be selected.

When generating a reduced image, two methods can be considered in the same manner. However, since the resolution tends to decrease when the image is reduced, the former method that can be generated at high speed may be automatically selected.
(3. Similarity)
In the third embodiment and the fourth embodiment of the present invention, the subject number in FIG. 12 is a diagram showing file management information in this embodiment for a subject that is the same as or similar to a subject that has already been detected. Although the number before _ (underscore) is the same number, similarities with all detected subjects may be measured, and the information may be registered in the file management information. Since the measurement technique of similarity is in the process of development, it is useful in practical use of the present invention that the threshold value for determining whether the similarity is the same subject or not can be changed.

As for the similarity, for example, a method of using the sum of absolute difference values or correlation coefficients of each pixel after the sizes of the images of the objects to be compared are made uniform.
(4. Other)
An area selection unit may be further provided, and the display area selected by the area selection unit may be an active display area, and the display area not selected by the area selection unit may be an inactive display area. There is an effect that the display area in the active state and the display area in the inactive state can be easily replaced. In the first to fourth embodiments of the present invention, the example in which the two-screen display mode is configured with the long side direction of the display screen as the vertical direction is shown. A two-screen display mode may be configured as the vertical direction.

  In the first to fourth embodiments of the present invention, an example in which the image storage unit is the memory card 11 inserted into the card connector 10 has been described. However, the image storage unit is a memory built in the digital still camera. Alternatively, it may be a removable memory card 11 or the like. If the memory card 11 or the like is used, the effect of the present invention can be obtained for an image taken by another apparatus.

  In the first to fourth embodiments of the present invention, an example in which the digital still camera includes a liquid crystal display as a display unit has been described. However, the display unit may be included in the digital still camera. The digital still camera may be provided with a display device interface unit so that an external display device can be connected. If the display device interface unit is provided, the entire image and the subject can be simultaneously viewed on a large screen of an external large display device such as a plasma television.

  In the first to fourth embodiments of the present invention, an example in which the digital still camera is provided with one liquid crystal display 8 as a display unit has been described. It may be divided into display areas, or two display screens may be provided. If two display screens are provided, the display screen can be arranged with an optimum layout for the image display device.

  In the first to fourth embodiments of the present invention, an example in which a human face is a subject has been shown. However, a subject is recognized as a person, animal, plant, character, figure, or standard shape. Any one or a plurality of possible objects may be used. Since the part to be enlarged can be selected from a plurality of categories, there is an effect that it is possible to select a subject more suited to the user's preference.

  The present invention may be used as an image display program when a personal computer or the like is used as an image display device.

  The image display device of the present invention displays an enlarged or reduced image of a subject included in an image displayed in the display area in the active state in the display area in the inactive state. Therefore, the digital still camera, the digital video camera, and the camera-equipped mobile phone Imaging devices such as telephones, PDAs, portable game machines, portable devices such as portable music players capable of displaying images, storage devices capable of recording images and displaying them on televisions, televisions equipped with memory card slots, etc. Can be applied to. Further, the present invention can be applied to an image display program when a personal computer or the like is used as an image display device.

1 is a block diagram illustrating a circuit configuration of a digital still camera according to Embodiment 1. FIG. The figure which shows the example of a directory structure of the recording data recorded on the memory card Diagram showing the coordinate system of file management information and recorded data The flowchart which shows operation | movement when displaying the enlarged image of the to-be-photographed object detected from the image displayed on the display area of an active state on the display area of an inactive state The figure which shows the example of a display of a liquid crystal display when displaying the enlarged image of the detected to-be-photographed object in the display area of an inactive state The figure which shows the example of a display of a liquid crystal display when displaying that a to-be-photographed object was not detected in the display area of an inactive state The figure which shows the example of a display of a liquid crystal display when displaying the enlarged image of several detected subjects on the display area of an inactive state FIG. 6 is a block diagram illustrating a circuit configuration of a digital still camera according to Embodiment 2. The flowchart which shows operation | movement when displaying the enlarged image of the to-be-photographed object detected from the image displayed on the display area of an active state sequentially on the display area of an inactive state. The figure which shows the 1st display method in the example of a display of a liquid crystal display when displaying the enlarged image of the several subject detected in the display area of an inactive state FIG. 9 is a block diagram illustrating a circuit configuration of a digital still camera according to Embodiment 3. The figure which shows the file management information in Embodiment 3 A flowchart showing an operation when displaying all images including the image of the subject displayed in the active display area in the inactive display area. The figure which shows the example of a display of a liquid crystal display when displaying the detected whole image in the display area of an inactive state The figure which shows the 1st display method which displays the detected several whole image in the display area of an inactive state The figure which shows the 2nd display method which displays the detected several whole image in the display area of an inactive state FIG. 9 is a block diagram illustrating a circuit configuration of a digital still camera according to Embodiment 4. A flowchart showing an operation when sequentially displaying the entire image including the image of the subject displayed in the active display area in the inactive display area. Schematic diagram explaining the enlargement and reduction of the subject Schematic diagram explaining that enlargement and reduction change depending on the size of the subject

Explanation of symbols

1 Lens 2 CCD
3 CCD control circuit 4 A / D conversion circuit 5 SDRAM
6 Image signal processing circuit 6a Signal processing unit 6b Image instruction unit 6c Control unit 7 CPU
8 Liquid crystal display 8a Display area in active state 8b Display area in inactive state 10 Card connector 11 Memory card 12 Mode dial 13 Shutter button 14 Image selection button 15 Subject selection button 16 Menu selection button

Claims (25)

A display unit having a display screen;
A control unit having a two-screen display mode that configures an active display region and an inactive display region in the display screen of the display unit;
An image storage unit in which recording data is recorded;
An image instruction unit for selecting an image to be displayed in the display area in the active state from recorded data recorded in the image storage unit;
With
The controller is
The recording data instructed by the image instruction unit is converted into display data and displayed in the active display area,
A subject is detected from the recording data instructed by the image instruction unit or the display data converted from the recording data instructed by the image instruction unit;
Generating an enlarged or reduced image of the detected subject from the recording data instructed by the image instruction unit or the display data converted from the recording data instructed by the image instruction unit;
Displaying an enlarged or reduced image of the generated subject in the display area in the inactive state;
An image display device characterized by that. The controller is
The recording data instructed by the image instruction unit is converted into display data and displayed in the active display area,
When detecting a plurality of subjects from the recording data instructed by the image instruction unit or the display data converted from the recording data instructed by the image instruction unit,
Generating enlarged or reduced images of the detected plurality of subjects from recording data instructed by the image instruction unit or display data converted from recording data instructed by the image instruction unit;
Displaying the enlarged or reduced images of the plurality of generated subjects in parallel in the display area in the inactive state;
The image display apparatus according to claim 1. When the control unit detects a plurality of subjects from the recording data instructed by the image instructing unit or the display data converted from the recording data instructed by the image instructing unit, one of the detected plurality of subjects is detected. A subject selection section for selecting one or more subjects,
Further comprising
The controller is
The recording data instructed by the image instruction unit is converted into display data and displayed in the active display area,
When detecting a plurality of subjects from the recording data instructed by the image instruction unit or the display data converted from the recording data instructed by the image instruction unit,
Instructing the image displayed in the active display area to be able to select the plurality of detected subjects,
An enlarged or reduced image of one or more subjects selected by the subject selection unit is generated from the recording data instructed by the image instruction unit or the display data converted from the recording data instructed by the image instruction unit. ,
Selectively displaying an enlarged or reduced image of the generated one or more subjects in the display area in the inactive state;
The image display apparatus according to claim 1. A display unit having a display screen;
A control unit having a two-screen display mode that configures an active display region and an inactive display region in the display screen of the display unit;
An image storage unit in which recording data is recorded;
An image sequential instruction unit for sequentially instructing an image to be displayed in the active display area from a part or all of the recording data recorded in the image storage unit;
With
The controller is
The recording data instructed by the image sequential instruction unit is converted into display data and displayed in the active display area,
A subject is detected from the recording data instructed by the image sequential instruction unit or the display data converted from the recording data instructed by the image sequential instruction unit;
Generating an enlarged or reduced image of the detected object from the recording data instructed by the image sequential instruction unit or the display data converted from the recording data instructed by the image sequential instruction unit;
Displaying an enlarged or reduced image of the generated subject in the display area in the inactive state;
An image display device characterized by that. The controller is
The recording data instructed by the image sequential instruction unit is converted into display data and displayed in the active display area,
When detecting a plurality of subjects from the recording data instructed by the image sequential instruction unit or the display data converted from the recording data instructed by the image sequential instruction unit,
Generating enlarged or reduced images of the detected plurality of subjects from recording data instructed by the image sequential instruction unit or display data converted from recording data instructed by the image sequential instruction unit;
Displaying the enlarged or reduced images of the plurality of generated subjects in parallel in the display area in the inactive state;
The image display device according to claim 4. The controller is
The recording data instructed by the image sequential instruction unit is converted into display data and displayed in the active display area,
When detecting a plurality of subjects from the recording data instructed by the image sequential instruction unit or the display data converted from the recording data instructed by the image sequential instruction unit,
Generating enlarged or reduced images of the detected plurality of subjects from recording data instructed by the image sequential instruction unit or display data converted from recording data instructed by the image sequential instruction unit;
Sequentially displaying enlarged or reduced images of the plurality of generated subjects in the inactive display area;
The image display device according to claim 4. The controller is
When the subject is not detected from the recording data instructed by the image sequential instruction unit or the display data converted from the recording data instructed by the image sequential instruction unit,
Do not display the display data converted from the recording data instructed by the image sequential instruction unit in the active display area,
The image display device according to claim 4, wherein the image display device is an image display device. A display unit having a display screen;
A control unit having a two-screen display mode that configures an active display region and an inactive display region in the display screen of the display unit;
An image storage unit in which recording data is recorded;
The control unit detects from the recording data recorded in the image storage unit or the display data converted from the recording data recorded in the image storage unit, and the recording data recorded in the image storage unit or the image storage unit A subject storage unit for recording an enlarged or reduced image of the subject generated from display data converted from the recorded data recorded in
A subject instruction unit for selecting an image to be displayed in the active display area from an enlarged or reduced image of a subject recorded in the subject storage unit;
With
The controller is
Displaying an enlarged or reduced image of the subject instructed by the subject instruction unit in the active display area;
Detecting recording data including the subject instructed by the subject instruction unit from the recording data recorded in the image storage unit;
Converting the detected recording data into display data for display in the inactive display area;
An image display device characterized by that. The controller is
Displaying an enlarged or reduced image of the subject instructed by the subject instruction unit in the active display area;
Detecting recording data including a subject identical or similar to the subject instructed by the subject instruction unit from the recording data recorded in the image storage unit;
Converting the detected recording data into display data for display in the inactive display area;
The image display apparatus according to claim 8. The controller is
Displaying an enlarged or reduced image of the subject instructed by the subject instruction unit in the active display area;
When recording data including a subject that is the same as or similar to the subject instructed by the plurality of subject instruction units is detected from the recording data recorded in the image storage unit,
Converting the detected recording data into display data in the display area in the inactive state and displaying in parallel;
The image display device according to claim 9. The controller is
Displaying an enlarged or reduced image of the subject instructed by the subject instruction unit in the active display area;
When recording data including a subject that is the same as or similar to the subject instructed by the plurality of subject instruction units is detected from the recording data recorded in the image storage unit,
The detected recording data is converted into display data and sequentially displayed in the inactive display area.
The image display device according to claim 9. A display unit having a display screen;
A control unit having a two-screen display mode that configures an active display region and an inactive display region in the display screen of the display unit;
An image storage unit in which recording data is recorded;
The control unit detects from the recording data recorded in the image storage unit or the display data converted from the recording data recorded in the image storage unit, and the recording data recorded in the image storage unit or the image storage unit A subject storage unit for recording an enlarged or reduced image of the subject generated from display data converted from the recorded data recorded in
A subject sequential instruction unit for sequentially instructing an image to be displayed in the active display area from a part or all of an enlarged or reduced image of the subject recorded in the subject storage unit;
With
The controller is
Displaying an enlarged or reduced image of the subject instructed by the subject sequential instruction unit in the display area in the active state;
Detecting recording data including the subject instructed by the subject sequential instruction unit from the recording data recorded in the image storage unit;
Converting the detected recording data into display data for display in the inactive display area;
An image display device characterized by that. The controller is
The recording data is converted into display data and displayed in the active display area,
When no subject is detected from the display data,
Detecting a subject from the recorded data;
The image display device according to claim 1, wherein the image display device is an image display device. A detection selection unit for selecting whether the control unit detects a subject from recorded data or display data;
Further comprising
The controller is
The recording data is converted into display data and displayed in the active display area,
A subject is detected from either the recording data or the display data selected by the detection selection unit;
The image display device according to claim 1, wherein the image display device is an image display device. The controller is
The recording data is converted into display data and displayed in the active display area,
When no subject is detected from the recorded data or the display data,
Displaying information indicating that no subject has been detected in the inactive display area;
The image display device according to any one of claims 1 to 6, and 8 to 14. The controller is
The recording data is converted into display data and displayed in the active display area,
A subject is detected from the recorded data or the display data;
When the detected subject is larger than a predetermined size, an enlarged or reduced image of the detected subject is generated from the display data,
When the detected subject is smaller than a predetermined size, an enlarged or reduced image of the detected subject is generated from the recording data.
The image display device according to claim 1, wherein the image display device is an image display device. The controller is
The recording data is converted into display data and displayed in the active display area,
A subject is detected from the recorded data or the display data;
Generating a reduced image of the detected subject from the display data;
Generating an enlarged image of the detected subject from the recorded data;
The image display device according to claim 1, wherein: A generation selection unit for selecting whether the control unit generates an enlarged or reduced image of a subject from recorded data or display data;
Further comprising
The controller is
The recording data is converted into display data and displayed in the active display area,
A subject is detected from the recorded data or the display data;
Generating an enlarged or reduced image of the detected object from either the recording data or the display data selected by the generation selection unit;
The image display device according to claim 1, wherein: An area selection unit for selecting which of the display areas is the active display area;
Further comprising
The controller is
The display area selected by the area selection unit is the display area in the active state,
The display area that is not selected by the area selection unit is the display area in the inactive state,
The image display device according to claim 1, wherein the image display device is an image display device. The image storage unit
It is a storage medium mounting unit that can detach a storage medium on which recording data is recorded.
The image display device according to claim 1, wherein: The display unit
A display device interface unit to which a display device can be connected;
The image display device according to claim 1, wherein The display unit
Consists of at least two display screens
One display screen functions as the display region in the active state, and the other display screen functions as the display region in the inactive state.
The image display device according to any one of claims 1 to 21, The subject is
Any one or more of a person, animal, plant, character, figure, or standard shape recognizable object,
The image display apparatus according to claim 1, wherein the image display apparatus is a display apparatus. Computer
Image instruction means for selecting recording data;
Configure an active display area and an inactive display area in the display screen,
The recording data instructed by the image instruction means is converted into display data and displayed in the active display area,
A subject is detected from the recording data instructed by the image instruction means or the display data converted from the recording data instructed by the image instruction means;
Generating an enlarged or reduced image of the detected subject from the recording data instructed by the image instruction means or the display data converted from the recording data instructed by the image instruction means;
Control means for displaying an enlarged or reduced image of the generated subject in the inactive display area;
An image display program that makes it work. Computer
Subject instruction means for selecting an enlarged or reduced image of the subject;
Configure an active display area and an inactive display area in the display screen,
Displaying an enlarged or reduced image of the subject instructed by the subject instruction means in the active display area;
Detecting recording data including a subject instructed by the subject instruction means;
Control means for converting the detected recording data into display data for display in the inactive display area;
An image display program that makes it work.

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