Patent ID: 8229004
Filing Date: 2012-07-24
Classification: H04N

Abstract:
1. An image signal processing apparatus for classifying pictures contained in an image signal into a plurality of picture types and compression-encoding the image signal, comprising: an acquisition unit configured to acquire a gain setting value for the image signal; a compression encoding unit configured to execute compression-encoding the image signal; an adjustment unit configured to adjust a code amount to be assigned to each picture type in said compression encoding unit; and a control unit configured to control an assignment ratio between the code amount to be assigned to one picture type and the code amount to be assigned to each of other picture types, by changing the assignment ratio in accordance with the gain setting value acquired by said acquisition unit, wherein said control unit increases the assignment ratio of the code amount to be assigned to a picture that is to be encoded by inter-picture prediction with respect to the code amount to be assigned to a picture to be intra-coded when the gain setting value is larger than a predetermined value, and wherein said control unit changes the assignment ratio of the code amount to be assigned to the picture to be encoded by inter-picture prediction with respect to the code amount to be assigned to the picture to be intra-encoded, in proportion to the gain setting value.