Image Processing Device Determining Whether Image is Chromatic Color Image or Achromatic Color Image

摘要

In an image processing device, the control device identifies a background color of the image. The control device classifies each of the pixels into either one of a background color pixel group and a non-background color pixel group. The control device determines whether a partial region of the image having the non-background pixel is a chromatic color region or an achromatic color region, without using pixel values corresponding to pixels classified into the background color pixel group. The control device determines that the image is chromatic color image when it is determined that the partial region is the chromatic color region. The control device determines that the image is achromatic color image when it is determined that the partial region is the achromatic color region.

主权项

1. An image processing device comprising:
an acquiring unit configured to acquire image data that has pixel values and represents an image having pixels corresponding to the pixel values; and a control device configured to:
identify a background color of the image;classify each of the pixels into either one of a background color pixel group and a non-background color pixel group, classification into the background color pixel group being made when a pixel value indicates the background color, classification into the non-background color pixel group being made when a pixel value does not indicate the background color;determine whether a partial region of the image having the non-background pixel is a chromatic color region or an achromatic color region by using pixel values corresponding to pixels in the partial region that are classified into the non-background color pixel group and without using pixel values corresponding to pixels classified into the background color pixel group;determine that the image is chromatic color image when it is determined that the partial region is the chromatic color region; anddetermine that the image is achromatic color image when it is determined that the partial region is the achromatic color region.