JP2011049930A - Semiconductor integrated circuit and still image display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To display a photographic image to facilitate a selecting operation after photographing. <P>SOLUTION: A semiconductor integrated circuit (10) includes: a same scene detection unit (11) that detects still images related to the same scene among captured still images; a difference area detection unit (12) that detects an area photographed differently among the detected still images; and a control unit (13) that performs display control for highlighting the detected area. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a semiconductor integrated circuit, and more particularly to a technique for controlling display of a photographed photographic image.

  In recent years, digital still cameras (hereinafter referred to as DSCs) are rapidly spreading. In DSC, a method of compressing and recording a photographic image on a rewritable recording card medium represented by an SD (Secure Digital) memory card is employed. This makes it easy to select and print a photo image with good image quality after deleting a large number of images, or to delete a photo image with poor image quality. In addition, the capacity and cost of recording card media are rapidly increasing, and since signal processing is accelerated, a high-speed continuous shooting function can be used. For this reason, many users have used the method of “photographing a large number and selecting later”.

  Such a use eliminates the trouble of taking a picture after waiting for a photo opportunity, or confirming a picture after taking a picture and deleting the picture image again when the picture is not good. On the other hand, post-shooting operations such as selecting and printing good-looking photo images from a large number of photo images taken with the continuous shooting function, etc., and deleting them by selecting poor-looking photo images become very complicated. End up.

  Therefore, a large number of photographic images that are highly likely to be identical are automatically narrowed down and detected, and the detected photographic images are displayed in a list (for example, see Patent Document 1).

JP 2007-171617 A

  As the number of detected identical photographic images increases, the user must compare many images in order to select a photographic image with good image quality. For this reason, a very long time is required, and it becomes difficult to select a photographic image.

  The present invention has been made in view of this point, and an object of the present invention is to display a photographic image so that a sorting operation after photographing is facilitated.

  In order to solve the above-described problems, the present invention has taken the following solutions. In other words, as a semiconductor integrated circuit that controls display of a captured still image, the same scene detection unit that detects a still image related to the same scene among the captured still images and the detected still image are reflected between each other. It is assumed that a different area detection unit that detects different areas and a control unit that performs display control to emphasize the detected areas are provided.

  According to this, among the captured still images, regions with different reflections in the still images related to the same scene are highlighted and displayed.

  Alternatively, as a semiconductor integrated circuit that controls the display of a captured still image, the same scene detection unit that detects a still image related to the same scene among the captured still images is similar to the captured still image. It is assumed that a group configuration unit for grouping objects and selecting a representative image from each group and a control unit for controlling display of the representative image are provided.

  According to this, similar images of still images related to the same scene among the captured still images are grouped and a representative image of each group is displayed. That is, the number of still images displayed for the sorting operation is reduced.

  According to the present invention, a user can easily select a still image after shooting.

It is a block diagram which shows the structure of the still image display control apparatus which concerns on one Embodiment of this invention. It is a figure which shows the example of grouping of the still image which concerns on the same scene. It is a figure which shows the example which highlighted and displayed the area | region where a reflection differs between representative images. It is a figure which shows the example which expanded and displayed the area | region from which a reflection differs. It is a figure which shows the example which displayed the still image in the selected group. It is a figure which shows the example which displayed the representative image.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing a configuration of a still image display control apparatus according to an embodiment of the present invention. The recording medium 1 is, for example, an SD memory card. A plurality of images photographed by DSC or the like are recorded on the recording medium 1. The image on the recording medium 1 is read by the reading unit 2, is display-controlled by the semiconductor integrated circuit 10, and is displayed on the display unit 19.

  A user operation is input to the input unit 22. The erasing unit 23 deletes the image that has been subjected to the user's deletion operation from the recording medium 1. Note that the erasing unit 23 may automatically delete an image other than a good image selected by the user.

  The same scene detection unit 11 determines that images continuously taken at a shooting interval of, for example, 0.5 seconds or less among the images read by the reading unit 2 are the same scene.

  The group configuration unit 12 detects a motion vector between any two images among the images detected by the same scene detection unit 11, and calculates the motion amount of the subject of the two images. The group construction unit 12 aligns the positions of the subjects of the two images based on the amount of movement, and then divides each of the two images into, for example, an area of 16 × 16 pixels, so that the two images correspond to each other. The pixel value difference is accumulated for each area to be processed. Since the pixel value difference may be a negative value, the sum of squares or absolute values thereof are accumulated. Then, when the cumulative value of each region is smaller than a predetermined value, these two images are judged to be similar images and are grouped. And the group structure part 12 performs a spatial frequency analysis about each of the image in each group, for example, and selects the image containing many high frequency components as a representative image.

  The different area detection unit 13 accumulates pixel value differences for any two images of the representative images in the same manner as the group configuration unit 12. Then, an area where the cumulative value is larger than the predetermined value among the areas is determined to be an area with different reflection and is detected.

  The control unit 14 performs display control, for example, by enclosing regions with different reflections detected by the different region detection unit 13 with, for example, a dotted frame. The display unit 19 displays the image whose display is controlled by the control unit 14.

  Next, an operation example of the still image display control device will be described. First, as shown in FIG. 2, when there are 10 images taken at a shooting interval of 0.5 seconds or less, the 10 images 1 to 10 are detected as the same scene. The When the images 1 to 10 are detected, the images 1 to 4 are grouped as the group 1, the images 5 to 6 are the group 2, and the images 7 to 10 are the group 3. Then, image 1, image 5, and image 9 are selected as representative images of groups 1 to 3, respectively.

  Thereafter, as shown in FIG. 3, areas that are different from each other in the representative images of the groups 1 to 3 are detected, and these areas are highlighted on the dotted line frames 30 and 31 and displayed on the display unit 19.

  As described above, the user can easily determine whether or not the image is good by comparing the regions surrounded by the dotted frame of the displayed image, and can select an image with good image quality. In addition, even if there are many images related to the same scene, the number of images for comparing the quality of the images is reduced by grouping and displaying the representative images, so that the time for selecting images with good images can be shortened. it can.

  The same scene detection unit 11 accumulates pixel value differences for any two images read by the reading unit 2 in the same manner as the group configuration unit 12, and the accumulated value of each region is greater than a predetermined value. May be determined to be the same scene. Further, in the same scene detection unit 11, the group configuration unit 12, and the different region detection unit 13, since a significant region of the image normally exists at the center of the image, the pixel value difference is accumulated for the central region of the image. May be. Further, a face part may be detected by a human face detection process, and pixel value differences in the face part region may be accumulated.

  In addition, when the user selects, for example, the dotted frame 30, the control unit 14 may perform control to enlarge and display the area of the dotted frame 30 on the display unit 19 as illustrated in FIG. 4. In addition, when the user selects, for example, group 1, the control unit 14 may perform control to display the images 1 to 4 in the selected group 1 side by side on the display unit 19 as illustrated in FIG.

  Further, the group configuration unit 12 may be omitted. In this case, the different area detection unit 13 detects areas in which the images related to the same scene are different from each other. Alternatively, the different area detection unit 13 may be omitted. In this case, the representative image of each group is displayed as shown in FIG.

  In addition, when there are a plurality of scenes, the group selection unit 12 and the different area detection unit 13 may process the scene selected by the user using the input unit 22.

  Since the semiconductor integrated circuit according to the present invention can facilitate selection of images of the same scene, it is useful for a digital still camera or the like that can shoot a large number of images of the same scene by continuous shooting or the like.

DESCRIPTION OF SYMBOLS 10 Semiconductor integrated circuit 11 Same scene detection part 12 Group structure part 13 Different area | region detection part 14 Control part

Claims (18)

A semiconductor integrated circuit that controls display of a captured still image,
The same scene detection unit for detecting a still image related to the same scene among the captured still images;
A difference area detection unit for detecting an area in which reflection is different between the detected still images;
A semiconductor integrated circuit, comprising: a control unit that performs display control for emphasizing the detected area. The semiconductor integrated circuit according to claim 1.
Grouping the detected still images with similar ones, and comprising a group configuration unit for selecting a representative image from each group,
2. The semiconductor integrated circuit according to claim 1, wherein the different area detecting unit detects an area in which the representative images are different from each other. The semiconductor integrated circuit according to claim 2.
The difference area detection unit performs a process of aligning the subject of any two representative images of the representative images, and then calculates a pixel value difference relating to a predetermined image area corresponding to the two representative images. A semiconductor integrated circuit characterized by accumulating and detecting the predetermined image area as a different area when the cumulative value is larger than a predetermined value. The semiconductor integrated circuit according to claim 2.
The group composition unit performs a process of aligning a subject of any two still images among the still images detected by the same scene detection unit, and then performs a predetermined image corresponding to the two still images. 2. A semiconductor integrated circuit according to claim 1, wherein pixel value differences relating to a region are accumulated, and when the difference value is smaller than a predetermined value, it is determined that the two still images are similar to each other. The semiconductor integrated circuit according to claim 2.
The group forming unit performs a spatial frequency analysis on each of the still images in each group, and selects a still image containing a lot of high frequency components as a representative image. The semiconductor integrated circuit according to claim 2.
The semiconductor integrated circuit, wherein the control unit performs control to display still images in a selected group side by side. The semiconductor integrated circuit according to claim 1.
The semiconductor integrated circuit according to claim 1, wherein the same scene detection unit determines that still images having a shooting interval smaller than a predetermined time belong to the same scene. The semiconductor integrated circuit according to claim 1.
The same scene detection unit accumulates pixel value differences of corresponding pixels between the two still images after performing processing for aligning the subject of any two still images among the captured still images. And determining that the two still images belong to the same scene when the cumulative value is smaller than a predetermined value. The semiconductor integrated circuit according to claim 1.
The difference area detection unit performs a positioning process on the subject of any two still images among the still images detected by the same scene detection unit, and then performs a predetermined process corresponding to the two still images. A semiconductor integrated circuit characterized by accumulating pixel value differences relating to an image area and detecting the predetermined image area as an area having a different reflection when the accumulated value is larger than a predetermined value. The semiconductor integrated circuit according to claim 1.
The semiconductor integrated circuit according to claim 1, wherein the control unit performs display control for enlarging regions with different reflections. A semiconductor integrated circuit that controls display of a captured still image,
The same scene detection unit for detecting a still image related to the same scene among the captured still images;
Grouping the detected still images with similar ones, and selecting a representative image from each group;
A semiconductor integrated circuit comprising: a control unit that performs display control of the representative image. The semiconductor integrated circuit according to claim 11.
The semiconductor integrated circuit according to claim 1, wherein the same scene detection unit determines that still images having a shooting interval smaller than a predetermined time belong to the same scene. The semiconductor integrated circuit according to claim 11.
The same scene detection unit accumulates pixel value differences of corresponding pixels between the two still images after performing processing for aligning the subject of any two still images among the captured still images. And determining that the two still images belong to the same scene when the cumulative value is smaller than a predetermined value. The semiconductor integrated circuit according to claim 11.
The group composition unit performs a process of aligning a subject of any two still images among the still images detected by the same scene detection unit, and then performs a predetermined image corresponding to the two still images. 2. A semiconductor integrated circuit according to claim 1, wherein pixel value differences relating to a region are accumulated, and when the difference value is smaller than a predetermined value, it is determined that the two still images are similar to each other. The semiconductor integrated circuit according to claim 11.
The group forming unit performs a spatial frequency analysis on each of the still images in each group, and selects a still image containing a lot of high frequency components as a representative image. The semiconductor integrated circuit according to claim 11.
The semiconductor integrated circuit, wherein the control unit performs control to display still images in a selected group side by side. Detecting a still image related to the same scene among the captured still images;
Detecting a region in which the reflected still images differ between the detected still images;
And a step of displaying the detected region in an emphasized manner. Detecting a still image related to the same scene among the captured still images;
Grouping the detected still images with similar ones;
Selecting a representative image from each of the groups;
And a step of displaying the representative image.

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