Encoder, encoding method and program

Abstract

An encoder including a code amount prediction unit predicting the amount of code of data to be encoded, the code amount prediction unit including a conversion unit converting input syntax elements to symbol data, and a measurement unit measuring the predicted amount of code of the data to be encoded on the basis of the number of times of renormalization processing performed on each bit in an arithmetic encoding process applied to the symbol data.

Description

technical field [0001] The present disclosure relates to an encoder, an encoding method, and a program, and more particularly, to an encoder, an encoding method, and a program that allow rapid prediction of a code amount. Background technique [0002] In recent years, video codecs for commercial or broadcast use include the AVC-Intra codec (see, eg, http: / / ja.wikipedia.org / wiki / AVC-Intra). AVC-Intra codecs include AVC-Intra 100 for full HD and AVC-Intra 50 for newscasts. Images compressed (encoded) by the AVC-Intra codec typically have the following characteristics: [0003] - Compliant with H.264 and MPEG-4 Part 10 Advanced Video Coding (H.264 / AVC); [0004] - Constructed by intra-frame compression only; and [0005] - All compressed frames have the same amount of code. [0006] Also, AVC-Intra 100 corresponds to a 10-bit 4:2:2 sampling format, while AVC-Intra50 corresponds to a 10-bit 4:2:0 sampling format. [0007] In an encoder using such an AVC-Intra codec, if the ...

AI Technical Summary

Problems solved by technology

[0012] Through the above technique (1), a truly optimal solution can be obtained as an encoding parameter, but it requires the preparation of a large number of encoders and results in increased installation costs

On the other hand, with technique (2), a truly optimal solution may not be obtained, but requires the preparation of at least one encoder and results in reduced installation costs

Images