Patent ID: 8077986
Filing Date: 2011-12-13
Classification: G06K,H04N

Abstract:
1. An information processing apparatus including a processor, the processor executing compression processing of a multivalued original image, comprising: a resolution rising unit configured to obtain high-resolution multivalued image by subjecting the multivalued original image to interpolation processing; a first binarization unit configured to obtain a first binarized image by applying binarization processing to the high-resolution multivalued image obtained by the resolution rising unit, wherein a resolution of the first binarized image is higher than that of the multivalued original image; a second binarization unit configured to obtain a second binarized image by applying binarization processing to the multivalued original image, wherein a resolution of the second binarized image is lower than that of the first binarized image; a text-region extraction unit configured to extract a text region based on the second binarized image obtained by the second binarization unit, thereby obtaining position information of the extracted text region; a text-color extraction unit configured to extract text colors based on the multivalued original image, the second binarized image and the position information of the extracted text region; a partial image generating unit configured to extract partial images, per each of the text colors, from the first binarized image based on the position information of the extracted text region and the text colors, and obtain text color information that correlates each of the partial images and the text color; a first compression unit configured to generate first compressed data by applying first compression processing to each of the partial images extracted by the partial image generating unit; a filling unit configured to generate a filled image by filling a text portion of the multivalued original image with a pixel value other than that of the text portion; a second compression unit configured to generate second compressed data by applying second compression processing to the filled image generated by the filling unit; and a combined compressed data generating unit configured to generate compressed data by combining the first compressed data, the second compressed data, the position information and the text color information.