PROVIDING INFORMATION ACCURACY IN IMAGE ENCODING DEVICE, METHOD AND PROGRAM FOR IMAGE ENCODING, IMAGE DECODING DEVICE AND METHOD AND PROGRAM FOR IMAGE DECODING Russian patent published in 2019 - IPC H04N19/61 H04N19/18 H04N19/124 

FIELD: computer equipment.

SUBSTANCE: invention relates to the computer equipment. Image encoding device comprises a prediction module, configured to perform prediction for image data to generate prediction errors based on prediction; conversion module, configured to perform a transformation with respect to prediction errors to generate conversion coefficients; quantization module configured to perform quantization with respect to said conversion coefficients to generate quantized coefficients, a first encoding module configured to encode quantized coefficients; second encoding module, configured to encode information indicating whether the range of values that are taken in the conversion and quantization is determined according to the bit depth, or constant regardless of the bit depth.

EFFECT: high image quality.

38 cl, 25 dwg