The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 10, 2001
Filed:
Jun. 24, 1998
Yasuhisa Nakamura, Joyo, JP;
Yoshihiro Kitamura, Osaka, JP;
Hiroshi Akagi, Nara, JP;
Masashi Hirosawa, Tenri, JP;
Kazuyuki Nako, Tenri, JP;
Mituaki Nakamura, Tenri, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A picture processing apparatus which can reduce matching errors and shorten a processing time for matching. In the picture processing apparatus, a binarization circuit individually binarizes a pair of object picture signals to generate line picture signals. A feature point extract circuit extracts a plurality of feature point pixels for each reference area in the reference side line picture. A transforming circuit widens a line width of the search side line picture. A correlation computation circuit, for each reference area, finds a correlation between each pixel within a search area in the line picture whose line width has been widened and the feature point pixels. A composition processing section composites the pair of object picture signals based on the correlations. A picture processing apparatus which can adjust density and color tone of two pictures to be composited. At first, the picture processing apparatus finds overlapping areas of the two pictures to be processed and finds typical values typifying distributions of density values of pixels in the overlapping area of each picture, respectively. Next, it adjusts overall lightness of the two pictures by multiplying the density value of each pixel of one picture by a ratio of the typical value of the other picture to the typical value of one picture.