Method and system for correcting chromatic aberrations of a color image produced by an optical system
First Claim
1. A method for correcting chromatic aberrations of a color image composed of a plurality of digitized color planes, the color image having been produced by means of an optical system, the method comprising:
- modeling and correcting, at least partly, the geometric anomalies composed of deviations between geometric defects of the digitized color planes, to obtain corrected digitized color planes, wherein it is possible to establish a correspondence between the corrected digitized color planes; and
combining the corrected digitized color planes to obtain a color image corrected completely or partly for the chromatic aberrations,wherein the step of modeling and correcting further comprises;
producing, by means of an appliance or an appliance chain, an image of a reference scene, the image exhibiting defects,producing, from the reference scene, a virtual reference,establishing a bijection between the image and the virtual reference,calculating projections of the virtual reference onto three digitized color planes R, G and B, using a same mathematical projection for each of the three digitized color planes,calculating formatted information comprising mathematical projections, andcorrecting the chromatic aberrations of the image based on the formatted information.
3 Assignments
0 Petitions
Accused Products
Abstract
A system and a method for correcting chromatic aberrations of a color image composed of a plurality of digitized color planes. The color image is assumed to have been produced by an optical system. According to the system and method, geometric anomalies of the digitized color planes are modeled and corrected, at least partly, in such a way to obtain corrected digitized color planes. The corrected digitized color planes are then combined to obtain a color image corrected completely or partly for the chromatic aberrations. The system and method are applicable to photographic or video image processing, in optical devices, industrial controls, robotics, metrology, etc.
18 Citations
5 Claims
-
1. A method for correcting chromatic aberrations of a color image composed of a plurality of digitized color planes, the color image having been produced by means of an optical system, the method comprising:
-
modeling and correcting, at least partly, the geometric anomalies composed of deviations between geometric defects of the digitized color planes, to obtain corrected digitized color planes, wherein it is possible to establish a correspondence between the corrected digitized color planes; and combining the corrected digitized color planes to obtain a color image corrected completely or partly for the chromatic aberrations, wherein the step of modeling and correcting further comprises; producing, by means of an appliance or an appliance chain, an image of a reference scene, the image exhibiting defects, producing, from the reference scene, a virtual reference, establishing a bijection between the image and the virtual reference, calculating projections of the virtual reference onto three digitized color planes R, G and B, using a same mathematical projection for each of the three digitized color planes, calculating formatted information comprising mathematical projections, and correcting the chromatic aberrations of the image based on the formatted information.
-
-
2. A method for correcting the distortion defects of a color image composed of a plurality of digitized color planes, the color image having been produced by means of an optical system and configured to correct distortion defects of the color image, the method comprising:
-
modeling and correcting, at least partly, the geometric anomalies composed of distortion defects of the digitized color planes, to obtain corrected digitized color planes, wherein it is possible to establish a correspondence between the corrected digitized color planes; and combining the corrected digitized color planes to obtain a color image corrected completely or partly the distortion defects, wherein the step of modeling and correcting further comprises; producing, by means of an appliance or an appliance chain, an image of a reference scene, the image exhibiting defects, producing, from the reference scene, a virtual reference, establishing a bijection between the image and the virtual reference, calculating projections of the virtual reference onto three digitized color planes R, G and B, using a same mathematical projection for each of the three digitized color planes, calculating formatted information comprising mathematical projections, and correcting the distortion defects of the image based on the formatted information.
-
-
3. A system for correcting chromatic aberrations of a color image composed of a plurality of digitized color planes, the color image having been produced by an optical system;
-
the system comprising; first calculating means for modeling and correcting geometric anomalies of the digitized color planes, to obtain corrected digitized color planes; and second calculation means for combining the corrected digitized color planes, to obtain a color image corrected completely or partly for the chromatic aberrations, wherein the first calculating means for modeling and correcting geometric anomalies further comprises; first producing means for producing, by means of an appliance or an appliance chain, an image of a reference scene, the image exhibiting defects, second producing means for producing, from the reference scene, a virtual reference, establishing means for establishing a bijection between the image and the virtual reference, third calculating means for calculating projections of the virtual reference onto three digitized color planes R, G and B, using a same mathematical projection for each of the three digitized color planes, fourth calculating means for calculating formatted information comprising mathematical projections, and correcting means for correcting the distortion defects of the image based on the formatted information. - View Dependent Claims (4, 5)
-
Specification