Image processing apparatus and image processing method

Abstract

In image encoding, to raise the degree of concentration of coefficient energy, there is disclosed the application of a secondary transform different from a primary transform to the transform coefficients after the primary transform. Since the transform coefficients after multiple transforms are applied may be transformed to a different domain than the frequency domain with respect to the original image characteristics, bandwidth control using a scaling list for the frequency domain (quantization matrix) is affected. Consequently, even in the case in which multiple transforms are applied, it is an object to provide a mechanism enabling bandwidth control using a scaling list. To achieve the above object, the present invention provides an image processing apparatus including a process control section that controls a scaling list process on the basis of transform information related to a transform applied to a processing target block and an image processing method.