Image processing system, image processing method, and medium having an image processing control program recorded thereon
US6351558B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 5, 1997 |
| Grant date | Feb 26, 2002 |
| Priority date | — |
| Expiry date | Nov 5, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Heretofore, an operator has been required to judge the type of image on a display and select any of various effect processings manually, thus automation has been impossible. By totaling luminance values of pixels into a luminance distribution which pixels have been selected by a thinning-out processing for image data (step S102) it becomes possible to count the number of colors used (step S104). As a result, if the number of colors used in image data is large, it can be judged that the image data is of a natural picture. Besides, a contrast enlarging process (step S110), a saturation highlighting process (step S112) and an edge highlighting process (S114), which are suitable for application to a natural picture on the basis of the results of such judgment, can be selected automatically while changing the respective highlighting degrees. Also in a printing process, if an inputted image is a natural picture, there is performed a color transformation using a pre-gray level transformation (S508), while if the image is not a natural picture, there is performed a color transformation using a combination of cache + interpolating operation (S506), and thus it is possible to automatically s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.