초록

Pixel blocks of an input image are type classified based on an analysis of the secord differences between the values of neighboring pixels in the rows and columns of each pixel block. A histogram of these second order differences may be employed to refine this analysis

대표청구항 ▼

[ What is claimed is:] [1.] A method for type characterizing a pixel block representation of an image region, said pixel block including a plurality of pixel rows and a plurality of pixel columns; said method comprising:inputting image signal data representing values for pixels in the pixel rows and

[ What is claimed is:] [1.] A method for type characterizing a pixel block representation of an image region, said pixel block including a plurality of pixel rows and a plurality of pixel columns; said method comprising:inputting image signal data representing values for pixels in the pixel rows and pixel columns of the pixel block; andobtaining spatial domain texture values for the respective rows and columns of said pixel block based on thresholded second order differences between the values of neighboring pixels in said rows and columns.