JPH06153142A - Picture file device - Google Patents

Abstract

PURPOSE:To easily discriminate a picture after interleaving by doubling the resolution of the picture in the vertical direction of a reduced picture. CONSTITUTION:The inputted picture data are stored in a picture memory 2, one dot in four dots of the stored data in the horizontal direction is validated to generate the reduced data, the reduced data are stored in a storage device 7 corresponding to the original picture and plural reduced slave patterns for the retrieval are listed by frame scanning.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image file apparatus for accumulating image data and selecting and displaying one of a plurality of accumulated image data.

[0002]

2. Description of the Related Art In searching a file device for an image in a conventional image file device of this type, a search is performed by a title such as a file name as in the case of searching a conventional document file. Since it is difficult to search, a method of searching by directly looking at the image has been proposed.

For example, there is a method in which data is decimated (reduced) to 1/2 × 1/2, as in the "registration information search method in an electronic file device described in Japanese Patent Laid-Open No. 63-102462". In the related art, even if the frame is displayed in the list screen display, the same data is used for both the even and odd fields.

[0004]

In the case of the conventional one configured as described above, when the images are displayed as a list and searched, the thinning rate (reduction rate) is required in order to increase the list screen.
However, there is a problem that the image is significantly deteriorated and it is difficult to distinguish the image.

The present invention has been made in view of the above circumstances, and a display device that makes it easier to determine an image after thinning by doubling the resolution of the reduced image in the vertical direction. It is to provide an image filing device provided with.

[0006]

An image filing apparatus according to the present invention comprises means for storing input image data, and means for validating 1 dot out of 4 dots in the horizontal direction from the stored data to create reduced data. If the vertical direction is the image data of the field display, a means for validating every other line from the field to create reduced data, and if the image data of the frame display is the vertical direction, only one field is set as the relevant field. A means for making the reduced data valid for each line, a means for storing the reduced data in correspondence with the original image, a means for displaying a list of a plurality of reduced child screens by frame scanning at the time of retrieval, and a reduced screen creation And means for averaging the images.

[0007]

The image filing apparatus of the present invention configured as described above makes it easy to distinguish an image by doubling the vertical resolution of the thinned image.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of an image filing device of the present invention will be described below with reference to the drawings.

First, before describing a specific embodiment of the image filing apparatus of the present invention, an NTSC system television which is a general display device related to the display of the image filing apparatus of the present invention will be described with reference to FIG. explain.

As shown in FIG. 8, there are 525 scanning lines in the NTSC system, and after scanning from 1 to 262.5 lines from the top to the bottom of the screen (indicated by solid lines), 263 to 525 again.
The book is scanned from above (indicated by a broken line).

These two scans are called field scans, and 30 images (frames) obtained by combining the solid line and broken line field scans are displayed per second. These are shown in FIG. 9, and all the scanning lines are displayed by combining two fields.

In FIG. 9, a is a frame image and b is
Indicates an even field image, and c indicates an odd field image.

Next, an embodiment of the image filing apparatus of the present invention will be described with reference to FIGS. The image filing apparatus of the present invention is configured as shown in the block diagram of FIG. 1. In FIG. 1, 1 is an A / D converter, 2 is an image memory, 3 is a CPU, 4 is a filing processor, and 5 is a filing processor. Is a buffer memory, 6 is a floppy disk controller (F
DC), 7 is a storage device, 8 is an image memory, 9 is a D / A converter, 10 is a control device, and 11 is a control device.

The operation state of the image filing apparatus configured as described above will be described. The image information input to the image input terminal 13 is A / D converted by the A / D converter 1 after analog signal processing to obtain an image. It is taken into the memory 2. The image memory 2 is controlled by the control device 10.

The image information taken into the image memory 2 is thinned (reduced) by the CPU 3 and sent to the buffer memory 5. On the other hand, the original image as an image file or the filing processing device 4 as compressed data
Is processed in filing. And buffer memory 5
The reduced data taken in is recorded as index data of the image data filed in the storage device 7 via the control device such as the FDC 6.

On the other hand, the reduced data read from the storage device 7 is once read into the buffer memory 5 via the FDC 6 and written to the designated address of the image memory 8. The image memory 8 is controlled by the control device 11.

Since the reduced data is used as a list display screen at the time of search, one or more of the reduced data are read according to the search contents to form a list display screen as shown by reference numeral 16 in FIG. Then, the image memory 8 is converted into analog data through the D / A converter 9, and the reduced screens of the even field screen and the odd field screen are displayed.

The operation of the image filing apparatus will be described in more detail. When an input image signal (composite signal or the like) is processed as an analog signal, the field is discriminated and digitized from the A / D converter 1. The image data is taken into the image memory 2 line by line. The thinning-out is performed by reading (reading out) the data necessary for the CPU 3 from the image memory 2 according to the reduction ratio.
Capture every 4 dots in the vertical direction. This data is written in the buffer memory 5 as thinned data, and the FDC 6
It is stored in the storage device 7 as the index data of the image data via the. The details of thinning will be described later.
The original image is also recorded in the storage device 7 so as to correspond to the reduced image. A means such as image compression may be used for recording the original image. Then, when searching for an image, first, reduced data as an index is read from the storage device 7 to the buffer memory 5 via the FDC 6. The writing position in the image memory 8 is designated by the number of searches and the thinning screen is written. The data written in the image memory 8 is displayed as an analog signal by the D / A converter 9. FIG. 7 shows how the index data is read from the storage device 7. At this time, the data of the odd and even fields are read from the image memory 8,
Each is displayed on the display device as a list screen 16. Then, when an image is selected from the list screen, the storage device 7 is again displayed.
The original image corresponding to the index screen is read out, written in the image memory 8 via the FDC 6, and displayed. In the above case, the image memories 2 and 8 and the control devices 10 and 11 may be one in terms of circuit configuration.

Next, the thinning-out will be described in detail.

First, vertical thinning will be described by dividing it into two pixel configurations.

As described in the structure (claims) as the gist of the present invention, attention is paid to the vertical direction, and in the case of image data of a field display, it is validated every other line from the field, and an image of a frame display is displayed. In the case of data, only one field is valid for every other line as the relevant field, so when the pixel configuration is, for example, 768 × 240 dots, it is image data for field display, so the original image 1
7FI is valid for each line as shown in FIG. 2 (line marked with a circle), which is the list display screen 16F of FIG.
As indicated by I, it is formed as a 1/16 reduced screen. Since the list display screen 16FI is a frame display screen, all the even field screens are displayed on the original image 17FI and both the even and odd field screens are displayed on the list display screen 16FI.

Further, when the pixel configuration is image data of frame display of, for example, 768 × 480 dots, only one field is set as the relevant field (in this case, even field) as shown in FIG. 3, and is effective every other line. age,
The same processing as the one-sided field is performed, and the list display screen 16FL shown in FIG. 3 is obtained.

2 and 3, the thinning of dots in the horizontal direction is omitted, and reduced data may be formed from odd fields in the frame display, and the odd fields become the original image in the field display. And Figure 3
17FL is an original image.

Next, the horizontal thinning of the original image will be described. In the horizontal direction, as shown in FIG. 4, of the pixels constituting one horizontal line of the original image 17H, one for every four dots.
Since the dots are valid, the horizontal reduced screen 16
It becomes SH. In FIG. 4, thinning out in the vertical direction (line) is omitted.

Next, at the time of creating the reduced screen of the display, an image file device for creating the reduced screen by the average value of 4 dots in the horizontal direction and the average value of 2 lines of the field in the vertical direction (claim) A specific example of 2) will be described with reference to FIGS.

First, two pixel configurations in the vertical direction will be described with reference to FIG.

Paying attention to the vertical direction of the original image, in the case of the image data of the field display, two lines are read from the field as one unit into the CPU 3, and in the case of the image data of the frame display, only one field is read. 2 lines are read as a unit into the CPU.

Now, when the pixel configuration is, for example, 768.times.240 dots, since it is the image data of the field display, as shown in FIG. 5, two lines of the original image 18FI are set as one unit (line in which circles are arranged) to the CPU3. The read two-line arithmetic processing is performed to create one line composed of the average value of the two lines.

This averaged one line constitutes one line of one screen of the 1/16 reduced screen 16SI as shown in FIG. (Because averaging is a known technique, it will not be described in particular.) Since the list display screen 16LV is a frame display screen, the original image 18FI has all even-numbered fields in the list display screen 16IV. Displayed on both screens.

If the pixel configuration is image data of frame display of 768 × 480 dots, as shown in FIG. 7, only one field of the original image 18FL is set as the relevant field (even field in this case), 2 A line is taken as a unit (line in which circles are lined up), read into the CPU, and two lines are arithmetically processed to form one line composed of an average value of the two lines.

This one line is 1/16 as shown in FIG.
One line of one screen of the reduced screen 16SL is formed. In FIG. 5, thinning of dots in the horizontal direction is omitted. Further, in frame display, reduced data may be formed from odd fields, and in field display, odd fields may be the original image.

Next, the horizontal direction will be described. In the horizontal direction, as shown in FIG. 6, four pixels forming one horizontal line are arranged.
Using dots as one unit (X mark and □ mark), they are read into the CPU and arithmetic processing is performed on 4 dots to create 1 dot composed of an average value of 4 dots. The list display screen 16
Ha is as shown in FIG. In FIG. 6, thinning in the vertical direction (line) is omitted.

[0033]

Since the image filing apparatus of the present invention is configured as described above, displaying the reduced image on each field screen makes the vertical resolution double that of the conventional reduced image. The list screen is easy to read, and because data is searched on the list screen, data accumulation,
Since it is not necessary to enter a file name during playback and you can search by directly looking at the contents of the data, it is easy to make a search mistake and the work can be done smoothly, and the key for character input is unnecessary and the circuit configuration is simplified. be able to.

[Brief description of drawings]

FIG. 1 is a block diagram showing a circuit configuration of an embodiment of an image file device of the present invention.

FIG. 2 is an explanatory diagram of a field display original image and a vertically thinned image of the image filing apparatus of the present invention.

FIG. 3 is an explanatory diagram of a frame display original image and a vertically thinned image of the image filing apparatus of the present invention.

FIG. 4 is an explanatory diagram of an original image and a horizontally thinned image of the image filing apparatus of the present invention.

FIG. 5 is an explanatory diagram of an original image of the image filing apparatus of the present invention and a thinned image obtained by averaging in the vertical direction.

FIG. 6 is an explanatory diagram of an original image of the image filing apparatus of the present invention and a thinned image obtained by performing horizontal averaging.

FIG. 7 is a block explanatory diagram of reading a list screen from the FDD of the image file device of the present invention.

FIG. 8 shows N related to the display of the image filing device of the present invention.
It is explanatory drawing of the scanning of the television of a TSC system.

FIG. 9 shows N related to the display of the image filing device of the present invention.
It is explanatory drawing of the image display of the television of a TSC system.

[Explanation of symbols]

 1 A / D converter 2 Image memory 3 CPU 4 Filing processing device 5 Buffer memory 6 FDC 7 Storage device 8 Image memory 9 D / A converter 10 Control device 11 Control device

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI technical display location H04N 5/92 H 4227-5C

Claims (2)

[Claims] 1. An image filing apparatus for accumulating image data and selecting one from a plurality of accumulated image data for display, and means for storing the input image data, and 4 dots in the horizontal direction from the stored data. A means for making 1 dot valid and creating reduced data, a means for making valid every other line from the field to create reduced data when the vertical direction is field display image data, and a vertical direction for displaying frame display image data In this case, only one field is made valid for every other line as the relevant field, means for creating reduced data, means for storing the reduced data in correspondence with the original image, and means for storing the reduced plurality of child screens as frames A plurality of child screens reduced in size by displaying a list by scanning, and performing frame display at the time of displaying the list Image file apparatus which is characterized in that to improve the vertical resolution. 2. When the reduced screen of the display according to claim 1 is created, the reduced screen is created by an average value of 4 dots in the horizontal direction, and the reduced screen is created by an average value of 2 lines of the field in the vertical direction. An image file device characterized by the above.