JP2006093880A5 - - Google Patents

Claims (8)

A character region determination means for determining a character region in the input image and generating character region coordinate information and non-character region coordinate information;
Handwritten region determination means for inputting attribute information indicating whether or not the target pixel is a character / line drawing , determining a handwritten region based on the attribute information and the non-character region coordinate information, and generating handwritten region coordinate information When,
Based on the character area coordinate information and the handwritten area coordinate information, a painting means for painting a character and a handwritten part in the input image with surrounding colors;
First encoding means for encoding the entire image obtained by filling with the filling means with encoding means for a gradation image;
A second encoding means for encoding the character and the handwritten portion with an encoding means for character line drawing;
An image processing apparatus comprising: output means for including each encoded data obtained by the first and second encoding means in one data file and outputting the data. The second encoding means includes
Generating means for generating a binary image corresponding to each color and generating a palette indicating the color of the binary image;
And a lossless encoding means for lossless encoding the binary image the generated,
The image processing apparatus according to claim 1, characterized in that the output and the table showing the relationship between the generated palette color, the obtained encoded data in the reversible encoding means as the encoding result. The image processing apparatus according to claim 1, wherein the second encoding unit includes a color reduction unit, and encodes image data after color reduction by the color reduction unit.   2. The first encoding unit includes a reduction unit that reduces an entire image obtained by painting with the painting unit to a predetermined size, and encodes the image reduced by the reduction unit. The image processing apparatus according to 1. The attribute determination unit outputs attribute information indicating that the image is a character / line image when a luminance difference or density difference between adjacent pixels in the input image is larger than a predetermined threshold value. The image processing apparatus described. A character region determination step for determining a character region in the input image and generating character region coordinate information as well as non-character region coordinate information;
Target pixel is inputted attribute information indicating whether a character-line image, and the attribute information, the determined entry area based on the non-character region coordinate information, the handwritten area determining step of generating a handwriting area coordinate information When,
Based on the character region coordinate information and the handwritten region coordinate information, a painting step of painting a character and a handwritten part in the input image with surrounding colors;
A first encoding step of encoding the entire image obtained by the filling step with an encoding means for a gradation image;
A second encoding step of encoding the character and the handwritten portion with an encoding means for character line drawing;
An image processing method comprising: an output step of outputting each encoded data obtained in the first and second encoding steps in a single data file. Mase write to read on a computer, a run makes computer program, the computer,
A character region determination means for determining a character region in the input image and generating character region coordinate information and non-character region coordinate information;
Handwritten region determination means for inputting attribute information indicating whether or not the target pixel is a character / line drawing , determining a handwritten region based on the attribute information and the non-character region coordinate information, and generating handwritten region coordinate information When,
Based on the character area coordinate information and the handwritten area coordinate information, a painting means for painting a character and a handwritten part in the input image with surrounding colors;
First encoding means for encoding the entire image obtained by filling in the filling step with an encoding means for a gradation image;
A second encoding means for encoding the character and the handwritten portion with an encoding means for character line drawing;
A computer program that functions as output means for outputting each encoded data obtained by the first and second encoding means in one data file.   A computer-readable storage medium storing the computer program according to claim 7.