Patent Number: 8,717,630

Title: Image processing apparatus and image processing method a thinning ratio applied when an image object has a first size is smaller than a thinning ratio applied when an image object has a second size smaller than the first size

Abstract: If a non-edge part of an image is thinned at a constant thinning ratio regardless of an image size (a character size or a line image width), a reduction in image density in the non-edge part becomes more conspicuous with increasing image size, which can lead to a reduction in image quality. In view of the above, the thinning ratio at which to thin data in the non-edge part of the image is determined depending on the image size. The thinning ratio is set to be smaller for images with sizes greater than or equal to a predetermined value than for images with sizes smaller than the predetermined value such that a high-quality image with sufficiently high density in its non-edge part is obtained regardless of the image size.

Inventors: Takahashi; Nobukazu (Misato, JP), Fujimoto; Yasunori (Inagi, JP)

Assignee: Canon Kabushiki Kaisha

International Classification: H04N 1/407 (20060101)

Expiration Date: 5/06/12018