Image processing device and method
An image processing device and method which can restore a loss during compression and storage of a video frame. The image processing device includes a pattern detecting unit which detects a pattern of additional data included in a vertical blank interval (VBI) of a video frame, a video storing unit which stores the video frame, and a pattern restoring unit which restores the additional data based on the detected pattern when the stored video frame is reproduced.
1 . An image processing device comprising:
a pattern detecting unit which detects a pattern of additional data included in a vertical blank interval (VBI) of a video frame;
a video storing unit which stores the video frame; and
a pattern restoring unit which restores the additional data based on the detected pattern when the stored video frame is reproduced.
2 . The image processing device of claim 1 , further comprising:
a compressing unit which compresses the video frame stored in the video storing unit using a specified compression compressor/decompressor (codec); and
a memory unit which stores the detected pattern.
3 . The image processing device of claim 2 , wherein the pattern detecting unit detects the pattern based on the number of pixels in a section of a line in which the additional data is present.
4 . The image processing device of claim 2 , wherein the pattern detecting unit regards only additional data that is present at specified pixel intervals as a pattern.
5 . The image processing device of claim 4 , wherein the additional data includes information about a means for acquiring the video frame or time information about a time point at which the video frame is acquired.
6 . An image processing method comprising:
detecting a pattern of additional data included in a vertical blank interval (VBI) of a specified video frame;
storing the specified video frame; and
restoring the additional data using the detected pattern when the stored video frame is reproduced.
7 . The image processing method of claim 6 , wherein the detecting of the pattern includes detecting the pattern based on the number of pixels in a section of a line in which the additional data is present.
8 . The image processing method of claim 7 , wherein the detecting of the pattern includes regarding only additional data that is present at specified pixel intervals as a pattern.
9 . The image processing method of claim 8 , wherein the storing of the specified video frame comprises storing the detected pattern and compressing the video frame using a specified compression compressor/decompressor (codec).
10 . The image processing method of claim 9 , wherein the additional data includes information about a means for acquiring the video frame or time information about a time point at which the video frame is acquired.
11 . An image processing method, comprising:
adding additional information to a video frame;
detecting a pattern of the additional data;
compressing the video frame by removing a high frequency area of the additional data; and
decompressing the compressed video frame and restoring the additional information using the detected pattern.
12 . The image processing method of claim 11 , wherein the additional information is included in a vertical blank interval (VBI) of the video frame.
13 . The image processing method of claim 11 , wherein the additional information includes information about a video acquiring unit that acquires the video frame and time information about a time at which the video frame is acquired.
14 . The image processing apparatus of claim 11 , further comprising displaying the decompressed video frame with the additional data.
15 . The image processing apparatus of claim 11 , wherein the decompression includes comparing a number of pixels in a section of the video frame having decompressed additional data to a number of pixels of additional data and, when the two numbers are the same, the additional data is restored using the detected pattern.
16 . The image processing method of claim 11 , wherein the additional data is present at intervals of a number of pixels and the detecting includes detecting only data that is present at the intervals.
17 . The image processing method of claim 11 , further comprising displaying the decompressed video frame based on the additional data.
18 . The image processing method of claim 11 , further comprising:
storing the compressed video frame; and
extracting the stored video frame before the decompressing.
19 . A method of increasing video frame storing efficiency, comprising:
detecting a pattern of additional data included in a video frame, the pattern being usable to restore the additional data when the video frame is reproduced from a storage;
compressing the video frame by removing a high frequency area of the additional data; and
storing the video frame in the storage.
20 . A method of increasing video frame reproducing efficiency, comprising:
extracting a compressed stored video frame; and
decompressing the extracted video frame and restoring lost additional data to the video frame using a detected pattern of the additional data, the detected pattern being detected in the video frame before compression of the video frame.