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US 8,576,917 B2Granted
Image processing method to reduce compression noise and apparatus using the same
AssigneeSamsung Electronics Co., Ltd.
InventorDale Yim
Life of this patent
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Abstract
An image processing method which adaptively reduces compression noise of a digital image and an image processing apparatus using the same are provided. The image processing method determines weight to reduce compression noise of an image based on local information and frame information, and processes the image according to the weight. Therefore, noise is adaptively reduced according to an image, and also noise is reduced with the optimal extent.
Claims22
An image processing method, comprising:
- extracting local information and frame information from an image;
- and
- determining a level of noise processing to reduce compression noise of the image based on the extracted information,
- wherein the local information comprises information regarding a quantization scale code and information regarding macro block skipping, and the frame information comprises information regarding an interlaced frame, information regarding the type of an original format, and information regarding an encoded frame,
- wherein the determining comprises determining a final weight by adding additional weight to the weight of each of the information regarding an interlaced frame, the information regarding the type of an original format, and the information regarding an encoded frame, the information regarding a quantization scale code, and the information regarding macroblock skipping.
2 more elements
An image processing method, comprising:
- decoding an image;
- and
- extracting information included in a header of image data of a macroblock unit in the decoded image and information included in a header of image data of a picture unit in the decoded image, and determining a level of noise processing to reduce compression noise of the image based on the extracted information,
- wherein the local information comprises information regarding a quantization scale code and information regarding macro block skipping, and the frame information comprises information regarding an interlaced frame, information regarding the type of an original format, and information regarding an encoded frame,
- wherein the determining comprises determining a final weight by adding additional weight to the weight of each of the information regarding an interlaced frame, the information regarding the type of an original format, and the information regarding an encoded frame, the information regarding a quantization scale code, and the information regarding macroblock skipping.
2 more elements
An image processing apparatus, comprising:
- a decoding unit which decodes an image;
- a controlling unit which extracts local information and frame information from the decoded image, and determines a level of noise processing to reduce compression noise of the image based on the extracted information;
- and
- an image processing unit which processes the decoded image based on the level of noise processing,
- wherein the local information comprises information regarding a quantization scale code and information regarding macro block skipping, and the frame information comprises information regarding an interlaced frame, information regarding the type of an original format, and information regarding an encoded frame,
- wherein the determining comprises determining a final weight by adding additional weight to the weight of each of the information regarding an interlaced frame, the information regarding, the type of an original format, and the information regarding an encoded frame, the information regarding a quantization scale code, and the information regarding macroblock skipping.
3 more elements
An image processing apparatus, comprising:
- a decoding unit which decodes an image;
- a controlling unit which extracts information included in a header of image data which are formed in a macro block unit in the decoded image and information included in a header of image data which are formed in a picture unit in the decoded image, and determines a level of noise processing to reduce compression noise of the image based on the extracted information;
- and
- an image processing unit which processes the decoded image based on the level of noise processing,
- wherein the local information comprises information regarding a quantization scale code and information regarding macro block skipping, and the frame information comprises information regarding an interlaced frame, information regarding the type of an original format, and information regarding an encoded frame,
- wherein the determining comprises determining a final weight by adding additional weight to the weight of each of the information regarding an interlaced frame, the information regarding the type of an original format, and the information regarding an encoded frame, the information regarding a quantization scale code, and the information regarding macroblock skipping.
3 more elements
Dependencies are inferred from the claim text.