Showing papers by "Yoichi Miyake published in 1990"

Facial pattern detection and color correction from television picture for newspaper printing

Abstract: A new method was introduced to detect skin color and facial pattern regions from NTSC television pictures. About 4000 skin colors in the TV picture were measured and the chromaticities r, g of those colors were calculated. A skin color chart was made from measured regions and color transformation matrix was calculated for printing from a TV picture

Automatic detection of blurred images for photofinishing

Abstract: In the photographic printing process, it is important to reject blurred images on negative color films. This process has been done by the photofinishing expert's observation. Therefore, it is also necessary to detect blurred images automatically for improvement of the photofinishing process. In this paper, a method of automatic detection of blurred negative color image is presented and a new sharpness factor calculated from the delta histogram is introduced

A New Color Measurement Method Of Color Print With Gloss

Abstract: A new apparatus for measurement and discrimination of color prints with gross has been developed, composed of a zoom lens, a mirror box, MOS cameras, a microcomputer and a color image processor. In this system, it is possible to take freely blurred image with the zoom lens controlled by the microcomputer, and a new color measurement method based on the obtained blurred image is introduced. From the experiments it became clear that the gloss can be lost with the blurring of the image, and the gloss can be values of the image are not affected if the blurred images are restorated by the modified Wiener filter. As the results, we conclude that the developed system is significant for the color measurement and distinction of prints with gross.