Encoding amount estimation apparatus, encoding amount estimation method and encoding amount estimation program
AssigneeNippon Telegraph and Telephone Corporation
InventorsShiori Sugimoto, Seishi Takamura, Atsushi Shimizu
Life of this patent
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Abstract
A coding amount estimation device includes: a feature vector generation unit that generates a feature vector on the basis of a feature map generated by an estimation target image and at least one filter set in advance; and a coding amount evaluation unit that evaluates a coding amount of the estimation target image on the basis of the feature vector.
Claims15
A coding amount estimation device comprising:
- a non-transitory storage medium configured to store computer program instructions;
- and
- a processor configured to execute the computer program instructions so as to:
- receive an estimation target image of a target object;
- process the estimation target image via at least one filter to generate a feature map, the at least one filter including a moving average filter;
- calculate differences between the feature map and the estimation target image to generate a secondary feature map comprising of elements, where value of a given element indicates redundancy in a spatial direction around the given element;
- select lowest values of the elements of the secondary feature map;
- generate a feature vector on a basis of the selected lowest values of the elements of the secondary feature map;
- and
- evaluate a coding amount of the estimation target image on a basis of the feature vector to generate an estimation coding amount corresponding to a global feature of the target object.
A coding amount estimation method for causing a processor to execute a process, the coding amount estimation method comprising executing on the processor the steps of:
- receiving an estimation target image of a target object;
- processing the estimation target image via at least one filter to generate a feature map, the at least one filter including a moving average filter;
- calculating differences between the feature map and the estimation target image to generate a secondary feature map comprising of elements, where value of a given element indicates redundancy in a spatial direction around the given element;
- selecting lowest values of the elements of the secondary feature map;
- generating a feature vector on a basis of the selected lowest values of the elements of the secondary feature map;
- and
- evaluating a coding amount of the estimation target image on a basis of the feature vector to generate an estimation coding amount corresponding to a global feature of the target object.
A coding amount estimation program product embodying computer program instructions on a non-transitory computer-readable medium for causing a computer to execute a process by a processor so as to perform the steps of:
- receiving an estimation target image of a target object;
- processing the estimation target image via at least one filter to generate a feature map, the at least one filter including a moving average filter;
- calculating differences between the feature map and the estimation target image to generate a secondary feature map comprising of elements, where value of a given element indicates redundancy in a spatial direction around the given element;
- selecting lowest values of the elements of the secondary feature map;
- generating a feature vector on a basis of the selected lowest values of the elements of the secondary feature map;
- and
- evaluating a coding amount of the estimation target image on a basis of the feature vector to generate an estimation coding amount corresponding to a global feature of the target object.
Dependencies are inferred from the claim text.