KR100266267B1 - Apparatus and method for outputing 1 frame image from i field image memory - Google Patents

Abstract

PURPOSE: Apparatus and method for outputting 1 frame image from 1 field image memory are provided to improve a resolution of an image and reduce a noise. CONSTITUTION: A first filter(10) receives image data(IN) and removes a radio-frequency component to output image data(X1) of new pixels. A counter(20) receives the new image data from the first filter, and outputs a first field signal(X2) when an odd field and a second field signal(X3) when an even field. 1 field processor(30) receives the first field signal and outputs a signal(OUT) for displaying the digitalized 1 field image memory. A second filter(40) receives the second field signal, and filters primarily and secondly for adding the new image data lines between the original image data lines to output 2 field image(X4). 2 field processor(50) receives the output from the second filter, and outputs a signal(OUT) for displaying the digitalized 2 field image memory.

Description

Apparatus and method for outputting one field image memory in one frame

1 is a configuration diagram of an apparatus for outputting one field image memory in one frame according to an embodiment of the present invention.

2 is a flowchart of a method of outputting a one-field image memory in one frame according to an embodiment of the present invention.

3 shows a 3x3 averaging area in the image memory according to the embodiment of the present invention,

4 shows a display area of a one-field video memory and a two-field video memory reproduced by filtering according to an embodiment of the present invention.

5 shows the display order of the one-field video memory and the two-field video memory reproduced by filtering according to the embodiment of the present invention.

The present invention relates to an apparatus and a method for outputting one field image memory in one frame. In particular, in a video system using digital still cameras and digital image data, one field image memory is converted into one frame by using average value filtering of the smoothing filter. It relates to a device and a method for outputting.

Hereinafter, a method of outputting a conventional one field image memory will be described with reference to the accompanying drawings.

The operation of the conventional method for outputting the one field image memory is as follows.

A basic technique for processing a digital image is a filtering method that removes noise, that is, high frequency components, extracts features, or performs basic processing. Filtering is performed in the spatial domain and the frequency domain, and spatial filtering is widely used because it is easy to use and easy to configure because it uses data in an image. Such spatial filtering is used for smoothing filter, differential filter, and feature. There are extraction filters.

In addition, conventionally, in order to display one frame image using one field image memory, one field image data is displayed twice in accordance with a synchronization signal.

However, the conventional method for outputting a single field image memory has a problem in that the resolution is reduced by displaying twice using a single field memory and occupies a large amount of system memory.

Therefore, an object of the present invention is to solve the above-mentioned problem, and in displaying one field, which is a limited memory, by increasing the resolution by displaying in one frame and using redundancy between pixels using modified filtering, One-field video memory that displays one-field (odd field) image memory as it is, and the second is to display two-field video memory by filtering the memory of one field to give an effect of the second field (even field). To provide a device and method for outputting.

As a means for achieving the above object, the configuration of the present invention,

First filter means for receiving image data of a current position, removing high frequency components in the image, or removing noise generated when transmitting image data to output averaged image data of new pixels;

A counter means for receiving the averaged image data of the first filter means, for outputting a first field signal for an odd field, and for outputting a second field signal for an even field, and receiving the first field signal, One field processing means for outputting an output signal for displaying a digitalized one field image memory, and for receiving the second field signal and adding a newly created image data line between the original image data lines, Second filter means for secondly filtering to generate and output a two-field image, and two-field processing means for receiving the output of the second filter means and outputting an output signal for displaying a digitalized two-field image memory. Is done.

In addition, as a means for achieving the above object, another configuration of the present invention is to read the current image data step of reading the image data of the current position, to remove the high-frequency components in the image data, or to remove the image data An image data averaging step of outputting image data of a new averaged pixel by removing noise generated during transmission; an image data determination step of determining whether the position of the averaged image data is even or odd; In the case of the image data, a first data processing step of outputting a signal displaying a digitalized one-field image memory, and in the case of even-numbered image data in the image data determination step, first and second filtering are performed. A filtering step of generating field image data and an output of the filtering step; Qualified 2 comprises a second data processing step of outputting an output signal for displaying the video field memory.

Referring to the accompanying drawings, the most preferred embodiment which can easily implement this invention by the above structure is as follows.

1 is a configuration diagram of an apparatus for outputting one field image memory in one frame according to an embodiment of the present invention.

2 is a flowchart of a method of outputting a one-field image memory in one frame according to an embodiment of the present invention.

3 shows a 3x3 averaging area in the image memory according to the embodiment of the present invention,

4 shows a display area of a one-field video memory and a two-field video memory reproduced by filtering according to an embodiment of the present invention.

5 shows the display order of the one-field video memory and the two-field video memory reproduced by filtering according to the embodiment of the present invention.

As shown in FIG. 1, the configuration of an apparatus for outputting a single field video memory in one frame according to an embodiment of the present invention receives the video data IN at the current position and removes high frequency components in the video. Or first filter means 10 for removing noise generated when transmitting image data and outputting the averaged image data X1 of the new pixel, and the averaged image data X1 of the first filter means 10. Counter means 20 for outputting a first field signal X2 for an odd field and for outputting a second field signal X3 for an even field;

Receives the first field signal X2, receives one field processing means 30 for outputting an output signal OUT for displaying a digitalized one field image memory, and the second field signal X3. Second filter means 40 for generating and outputting (X4) a two-field image by first and second filtering to add a newly created image data line between the original image data lines, and the second filter It consists of two field processing means 50 which receives the output X4 of the means 40 and outputs an output signal out for displaying the digitalized two field image memory.

In addition, the method for outputting the one-field video memory according to the embodiment of the present invention in one frame includes reading the current video data (S10) for reading the video data of the current position and the high frequency component in the video data. Image data averaging step (S20) of removing or removing noise generated when transmitting image data to output averaged new pixel image data, and determining whether the position of the averaged image data is even or odd. A data determination step (S30), a first data processing step (S40) for outputting a signal for displaying a digitalized one-field image memory in the case of the odd-numbered image data, and the image data determination step (S30). In the case of even-numbered image data in, filtering step (S50) of generating second field image data by first and second filtering and outputting It receives the output from the filtering step (S50) and, is made the output signal (OUT) for displaying the digitized image of the second field memory to the second data processing step (S60) of outputting.

The operation of the apparatus and method for outputting the one field image memory according to the embodiment of the present invention by one frame as described above is as follows.

Among the smoothing filters performed in the spatial domain, the average value filter is used to remove high frequency components in the image, noise added when digitalizing an analog image, or noise generated when transmitting image data. Can be modified. And the average value filter is displayed as follows.

, And here Denotes the image data of the averaged new pixel, I (i, j) is image data of the current position (i, j), and FC (i, j) is the filter coefficient of the applied average value filter.

Thus, referring to FIG. 3, the filter coefficient is given as follows in the case of a 3x3 filter region. That is, the filter coefficient

Becomes

In addition, as shown in FIG. 4, when the image data is a solid line, the digitalized one field memory processes original data in order to be displayed in synchronization with the vertical synchronization signal as shown in ① of FIG. In the dotted line of FIG. 4, the following filtering is performed. That is, in the case of an even field, the primary filtering is

Where FGI (k, l) is the first image data line, FF (i, j) is the one-field image memory, and FFC (i, j) is the second filter coefficient. At this time, the second filter coefficient is,

, The weight may vary.

In addition, secondary filtering,

Where SF (x, y) represents the second image data line, and the vector product of the first image data line FGI (k, l) and the third filter coefficient (right side of the right side of equation (5)) The weight of the third filter coefficient may vary.

Therefore, the image data is processed by the equations (3) and (5), and the image data is displayed in synchronization with the vertical synchronizing signal as shown by (2) in FIG. To this end, the first image data line FGI (k, l) is formed by first filtering by equation (3), and the second image data line is finally filtered by equation (5). (SF (x, y)) and a two-field picture are generated.

In FIG. 1, an operation of outputting one field image memory in one frame is as follows. The first filter means 10 receives the image data IN at the current position, removes high frequency components in the image, or removes noise generated when transmitting the image data, thereby obtaining the averaged image data X1 of the new pixel. The counter means 20 receives the averaged image data X1 of the first filter means 10 and outputs a first field signal X2 for an odd field, and a second field for an even field. The signal X3 is output.

In addition, the first field processing means 30 receives the first field signal X2 and outputs an output signal OUT for displaying a digitalized one field image memory. The second filter means 40 outputs the output signal OUT. The second field signal X3 is received, and a second field image is generated by first and second filtering in order to add a newly created image data line between the original image data lines, and outputs (X4).

The two field processing means 50 receives the output X4 of the second filter means 40 and outputs an output signal OUT for displaying the digitalized two field image memory.

Also, referring to FIG. 2, a method of outputting one field image memory in one frame is as follows. In the current image data reading step (S10), the image data of the current position is read, and in the image data averaging step (S20), the high frequency components in the image data are removed or the noise generated when transmitting the image data is averaged. The image data of the new pixel is output.

In the image data determination step (S30), it is determined whether the position of the averaged image data is even or odd. In the first data processing step (S40), in the case of the odd-numbered image data, A signal displaying one field image memory is output.

In the filtering step (S50), if the even-numbered image data is generated in the above-described image data determination step (S30), if the second field image data is generated by primary and secondary filtering, the second data processing step (S60). The output of the filtering step S50 is received to output an output signal for displaying the digitalized two-field image memory.

Therefore, the effect of the present invention, which operates as described above, can improve the resolution of the image because the 1-frame image can be made into the 1-field image, and can reduce the noise than displaying the 1-field image twice because of the filtering. The present invention can provide an apparatus and method for outputting one-field image memory in one frame, which can reduce the memory of the system because the one-frame image can show the effect of the one-frame image.

Claims (10)

First filter means for receiving image data of a current position, removing high frequency components in the image, or removing noise generated when transmitting image data and outputting averaged image data of new pixels; A counter means for receiving the averaged video data, outputting a first field signal for odd fields, and outputting a second field signal for even fields, and receiving the first field signal, A first field processing means for outputting an output signal for displaying an image, and receiving the second field signal, and filtering first and secondly to add a newly created image data line between the original image data line. A second filter means for generating and outputting a field image, and receiving the output of the second filter means to decode the digitalized two-field image memory. First apparatus for outputting a video field memory by one frame, comprising a step of including a second field processing means for outputting an output signal for playing. 2. The apparatus as claimed in claim 1, wherein said first filter means uses a smoothing filter. 3. The apparatus of claim 2, wherein the smoothing filter is a 3x3 averaging filter. 2. The apparatus as claimed in claim 1, wherein the image data of the new averaged pixel of the first filter means is a vector product of the image data of the current position and the first filter coefficient. . 2. The one-field image memory according to claim 1, wherein the first filtering of the second filter means generates a first image data line by a vector product of the first field image data and the second filter coefficient. This device outputs 1 frame. 6. The method of claim 1 or 5, wherein the second filtering of the second filter means generates a second image data line by the vector product of the first image data line and the third filter coefficient. A device for outputting one field image memory in one frame. The image data reading step of reading the current image data of the current position, and removing the high frequency components in the image data or removing the noise generated when transmitting the image data to output the averaged image data of the new pixel. An averaging step, an image data determination step of determining whether the position of the averaged image data is even or odd, and outputting a signal for displaying a digitalized one-field image memory in the case of the odd-numbered image data A first data processing step and a filtering step of generating second field image data by first and second filtering in the case of even-numbered image data in the image data determination step, and receiving the output of the filtering step To output an output signal for displaying a digitalized two-field image memory. 2 how the one-field video memory comprising a data processing step outputs the one frame. The 1-field image memory of claim 7, wherein the averaged new pixel image data of the image data averaging step is a vector product of the image data of the current position and the first filter coefficient. How to. 8. The first field image memory of claim 7, wherein the first filtering of the filtering step generates a first image data line based on the vector product of the first field image data and the second filter coefficient. How to output in frame. 10. The method of claim 7 or 9, wherein the second filtering of the filtering step generates a second image data line by a vector product of the first image data line and the third filter coefficient. How to output field image memory in 1 frame.