Image Processing Apparatus, Image Processing Method, and Program
First Claim
Patent Images
1. An image processing apparatus comprising:
- time subband splitting means for generating a lower-frequency subband split signal formed of low frequency components at a frame rate lower than a frame rate of an image signal and a higher-frequency subband split signal formed of high frequency components by performing a subband splitting process in a time direction on the image signal;
first encoding means for compressing the lower-frequency subband split signal; and
second encoding means for compressing the higher-frequency subband split signal,wherein the first encoding means and the second encoding means perform different encoding processes.
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Abstract
An image processing apparatus includes a time subband splitting unit configured to generate a lower-frequency subband split signal formed of low frequency components at a frame rate lower than a frame rate of an image signal and a higher-frequency subband split signal formed of high frequency components by performing a subband splitting process in a time direction on the image signal; a first encoding unit configured to compress the lower-frequency subband split signal; and a second encoding unit configured to compress the higher-frequency subband split signal, wherein the first encoding unit and the second encoding unit perform different encoding processes.
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Citations
23 Claims
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1. An image processing apparatus comprising:
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time subband splitting means for generating a lower-frequency subband split signal formed of low frequency components at a frame rate lower than a frame rate of an image signal and a higher-frequency subband split signal formed of high frequency components by performing a subband splitting process in a time direction on the image signal; first encoding means for compressing the lower-frequency subband split signal; and second encoding means for compressing the higher-frequency subband split signal, wherein the first encoding means and the second encoding means perform different encoding processes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An image processing apparatus comprising:
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first decoding means for receiving lower-frequency stream data recorded in recording means and performing a process for decompressing low-frequency components; second decoding means for receiving higher-frequency stream data recorded in the recording means and performing a process for decompressing high-frequency components; and time subband combining means for generating a combined image signal at a frame rate higher than a frame rate of the image signals, which are the decoding results of the first decoding means and the second decoding means, by performing a subband combining process in the time direction on the image signals, which are decoding results of the first decoding means and the second decoding means. - View Dependent Claims (14, 15, 16, 17)
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18. An image processing method comprising the steps of:
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generating a lower-frequency subband split signal formed of low frequency components at a frame rate lower than a frame rate of an image signal and a higher-frequency subband split signal formed of high frequency components by performing a subband splitting process in a time direction on the image signal; compressing the lower-frequency subband split signal; and compressing the higher-frequency subband split signal, wherein the step of compressing the lower-frequency subband split signal and the step of compressing the higher-frequency subband split signal perform different encoding processes.
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19. An image processing method comprising the steps of:
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receiving lower-frequency stream data and performing a process for decompressing low-frequency components; receiving higher-frequency stream data and performing a process for decompressing high-frequency components; and generating a combined image signal at a frame rate higher than the frame rate of a first image signal by performing a subband combining process in the time direction on the basis of the first image signal obtained by a process for decompressing the lower-frequency stream data and a second image signal obtained by a process for decompressing the higher-frequency stream data.
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20. A program for causing a computer to perform an information processing method, the information processing method comprising the steps of:
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generating a lower-frequency subband split signal formed of low frequency components at a frame rate lower than a frame rate of an image signal and a higher-frequency subband split signal formed of high frequency components by performing a subband splitting process in a time direction on the image signal; compressing the lower-frequency subband split signal; and compressing the higher-frequency subband split signal, wherein the step of compressing the lower-frequency subband split signal and the step of compressing the higher-frequency subband split signal perform different encoding processes.
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21. A program for causing a computer to perform an information processing method, the information processing method comprising the steps of:
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receiving lower-frequency stream data and performing a process for decompressing low-frequency components; receiving higher-frequency stream data and performing a process for decompressing high-frequency components; and generating a combined image signal at a frame rate higher than the frame rate of a first image signal by performing a subband combining process in the time direction on the basis of the first image signal obtained by a process for decompressing the lower-frequency stream data and a second image signal obtained by a process for decompressing the higher-frequency stream data.
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22. An image processing apparatus comprising:
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a time subband splitting unit configured to generate a lower-frequency subband split signal formed of low frequency components at a frame rate lower than a frame rate of an image signal and a higher-frequency subband split signal formed of high frequency components by performing a subband splitting process in a time direction on the image signal; a first encoding unit configured to compress the lower-frequency subband split signal; and a second encoding unit configured to compress the higher-frequency subband split signal, wherein the first encoding unit and the second encoding unit perform different encoding processes.
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23. An image processing apparatus comprising:
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a first decoding unit configured to receive lower-frequency stream data recorded in a recording unit and perform a process for decompressing low-frequency components; a second decoding unit configured to receive higher-frequency stream data recorded in the recording unit and perform a process for decompressing high-frequency components; and a time subband combining unit configured generate a combined image signal at a frame rate higher than a frame rate of the image signals, which are the decoding results of the first decoding unit and the second decoding unit, by performing a subband combining process in the time direction on the image signals, which are decoding results of the first decoding unit and the second decoding unit.
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Specification