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US 2012/0269490 A1Published application
Image processing apparatus and image processing method
AssigneeCanon Kabushiki Kaisha
InventorYoshinobu Sato
Life of this patent
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Abstract
An image processing apparatus and method converts a moving image signal into an image data format consisting of a luminance signal and a color-difference signal like that of the YUV format at a signal processing circuit 4, compression-encodes the image data at a compression circuit 10 and records it on a recording medium 11, in addition to reducing the same-format image data color-difference signal to generate image data for display, enabling the image processing apparatus for recording a moving image to achieve moving image recording of a quality that is good enough to be used as still images.
Claims23
1-10. (canceled)
An image processing apparatus for recording a moving image, said image processing apparatus comprising:
- a signal processing unit configured to convert an input moving image signal into first image data composed of (a) a luminance signal and (b) a color-difference signal, and to output the first image data;
- a conversion unit configured to convert the first image data into second image data having a reduced ratio of color-difference signal data amount to luminance signal data amount per predetermined numbers of pixels as compared to that of the first image data, and to output the second image data as image data for display;
- a compressing unit configured to compress the first image data by a predetermined compressing method and to output the compressed image data, wherein said compressing unit does not receive the second image data output from said conversion unit;
- and
- a recording unit configured to record the compressed image data compressed by said compressing unit as moving image data on a recording medium,
- wherein (a) the compression by said compressing unit to output the compressed image data for recording by said recording unit, and (b) the conversion by said conversion unit to output the second image data for display, are performed in association with the same first image data in parallel, and
- wherein for the second image data, the ratio of the color-difference signal data amount to the luminance signal data amount per predetermined numbers of pixels is less than that of the first image data.
4 more elements
An image processing method for recording a moving image, said image processing method comprising:
- a signal processing step of converting an input moving image signal into first image data composed of (a) a luminance signal and (b) a color-difference signal, and outputting the first image data;
- a conversion step of converting the first image data into second image data having a reduced ratio of color-difference signal data amount to luminance signal data amount per predetermined numbers of pixels compared to that of the first image data, and outputting the second image data as image data for display,
- a compressing step of compressing the first image data by a compressing method and outputting the compressed image data, wherein said compressing step does not receive the second image data output from said conversion step;
- a recording step of recording the compressed image data compressed by said compressing step as moving image data on a recording medium,
- wherein (a) said compression by said compressing step to output the compressed image data for recording by said recording step, and (b) said conversion by said conversion step to output the second image data for display, are performed in association with the same first image data in parallel, and
- wherein for the second image data, the ratio of the color-difference signal data amount to the luminance signal data amount per predetermined numbers of pixels of the second image data is less than that of the first image data.
3 more elements
An image processing apparatus for recording a moving image, said image processing apparatus comprising:
- a signal processing unit configured to convert an input moving image signal into YUV4:2:2 format data and to output the YUV4:2:2 format data;
- a conversion unit configured to convert the YUV4:2:2 format data into YUV4:1:1 format data, and to output the YUV4:1:1 format data as image data for display;
- a compressing unit configured to compress the YUV4:2:2 format data by a predetermined compressing method and to output the compressed image data, wherein said compressing unit does not receive the YUV4:1:1 format data output from said conversion unit;
- and
- a recording unit configured to record the compressed image data compressed by said compressing unit as moving image data on a recording medium,
- wherein (a) the compression by said compressing unit to output the compressed image data for recording by said recording unit, and (b) the conversion by said conversion unit to output the second image data for display, are performed in association with the same YUV4:2:2 format data in parallel.
3 more elements
An image processing apparatus for recording a moving image, said image processing apparatus comprising:
- a signal processing unit configured to convert an input moving image signal into YUV4:2:2 format data and to output the YUV4:2:2 format data;
- a conversion unit configured to convert the YUV4:2:2 format data into YUV4:2:0 format data, and to output the YUV4:2:0 format data as image data for display;
- a compressing unit configured to compress the YUV4:2:2 format data by a predetermined compressing method and to output the compressed image data, wherein said compressing unit does not receive the YUV4:2:0 format data output from said conversion unit;
- and
- a recording unit configured to record the compressed image data compressed by said compressing unit as moving image data on a recording medium,
- wherein (a) the compression by said compressing unit to output the compressed image data for recording by said recording unit, and (b) the conversion by said conversion unit to output the second image data for display, are performed in association with the same YUV4:2:2 format data in parallel.
3 more elements
An image processing method for recording a moving image, said image processing method comprising:
- a signal processing step of converting an input moving image signal into YUV4:2:2 format data and outputting the YUV4:2:2 format data;
- a conversion step of converting the YUV4:2:2 format data into YUV4:1:1 format data, and outputting the YUV4:1:1 format data as image data for display;
- a compressing step of compressing the YUV4:2:2 format data by a compressing method and outputting the compressed image data, wherein said compressing step does not receive the YUV4:1:1 format data output from said conversion step;
- and
- a recording step of recording the compressed image data compressed by said compressing step as moving image data on a recording medium,
- wherein (a) said compression by said compressing step to output the compressed image data for recording by said recording step, and (b) said conversion by said conversion step to output the second image data for display, are performed in association with the same YUV4:2:2 format data in parallel.
3 more elements
An image processing method for recording a moving image, said image processing method comprising:
- a signal processing step of converting an input moving image signal into YUV4:2:2 format data and outputting the YUV4:2:2 format data;
- a conversion step of converting the YUV4:2:2 format data into YUV4:2:0 format data, and outputting the YUV4:2:0 format data as image data for display;
- a compressing step of compressing the YUV4:2:2 format data by a compressing method and outputting the compressed image data, wherein said compressing step does not receive the YUV4:2:0 format data output from said conversion step;
- and
- a recording step of recording the compressed image data compressed by said compressing step as moving image data on a recording medium,
- wherein (a) said compression by said compressing step to output the compressed image data for recording by said recording step, and (b) said conversion by said conversion step to output the second image data for display, are performed in association with the same YUV4:2:2 format data in parallel.
3 more elements
Dependencies are inferred from the claim text.