Patent ID: 8873870

Claim:
An image information encoding apparatus, comprising: a processor; a transformation unit configured by the processor to: perform, when a chroma format signal has a 4:4:4 format, a transformation on 4×4 pixel blocks of a received image in accordance with a corresponding normalization coefficient, the received image corresponding to the chroma signal, the pixel blocks being associated with transformation scaling factors, and the normalization coefficient being a product of at least two of the transformation scaling factors; and generate transform coefficients based on an output of the transformation; and a quantization unit configured by the processor to: identify one or more of the transformation scaling factors, the identified transformation scaling factors being associated with an application of the transformation to corresponding ones of the pixel blocks; and calculate a quantization scaling factor based on the identified transformation scaling factors and a block size of the transformation applied to the corresponding pixel blocks; perform, when the chroma format signal has a 4:4:4 format, a quantization of the transform coefficients in accordance with the quantization scaling factor; and generate quantized coefficients corresponding to the chroma signal.