Patent ID: 8515188
Filing Date: 2013-08-20
Classification: G06K

Abstract:
1. An image processing apparatus for performing image coding by a lossless compression unit and a lossy compression unit, the apparatus comprising: an image coding pre-determination unit configured to perform a determination to select either one of the lossless compression unit and the lossy compression unit in coding pre-processing of an image; a data analysis unit configured to determine whether a color number for a pixel block of the image is single; and a coding unit configured to, when it is determined by the data analysis unit that the color number is not single, perform coding on the pixel block with the compression unit determined by the image coding pre-determination unit, wherein when it is determined by the data analysis unit that the color number is single, and it is determined that the compression unit determined by the image coding pre-determination unit is in an operational state to perform coding on a previous pixel block preceding the pixel block by one block, a determination result by the image coding pre-determination unit is changed and the coding unit performs coding on the pixel block with the other compression unit than the compression unit determined by the image coding pre-determination unit, and when it is determined by the data analysis unit that the color number is single, and it is determined that the compression unit determined by the image coding pre-determination unit is not in an operational state to perform coding on a previous pixel block preceding the pixel block by one block, the coding unit performs coding on the pixel block with the compression unit determined by the image coding pre-determination unit.