Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Method and apparatus for forming high contrast image in imaging system










Image Number 3 for United States Patent #6452631.

The present invention improves the contrast of the image signal before further adjustment by the principle of superposition of the optical-transferring system. There are two ways to carry out the principle of superposition one is in space domain, the other is in frequency domain. Each of them can be implemented by the system or method of the present invention. To implement the compensation in space domain, the present invention utilize the result of scanning the correction board to compensate the optical energy scattered by the optical-transferring system. A pixel in object space can be expressed in terms of the linear combination of the corresponding pixels in image space according to the principle of superposition. Thus is obtained by extracting the coefficients of the linear combination. The pixels of desired picture in image space is multiplied by the compensation vector and the image with sharp contrast is produced by the present invention in space domain. To implement the compensation in frequency domain, the present invention get the result of scanning the correction board and transform it to frequency form. Thus the compensation vector is obtained by extracting the amplitude and phase angle of the frequency form of the result of scanning the correction board. Transform the result of scanning the desired picture into frequency form, followed by dividing it by the compensation vector. The desired picture in frequency form is obtained. Taking the inverse transform of the desired picture, which is in frequency form, the result is transformed in space domain and can be processed or displayed with sharp contrast.








 
 
  Recently Added Patents
Computer server capable of supporting CPU virtualization
Multi-carrier operation for wireless systems
Sequential control device for a striking mechanism
Photovoltaic system with integrated photovoltaic panel and battery
Pet grooming brush and vacuum attachment
Anti-FGFR3 antibodies and methods using same
Methods, systems, and computer program product for virtually modifying surface region curvature to detect protrusions
  Randomly Featured Patents
Method and system for classification of packets based on meta-rules
Method of securing identification tag to drum by top chime
Electronic calendar with group scheduling and asynchronous fan out method
Door security device
Programmable wedding clock with displays for years months days and hours of marriage
Agomelatine hydrohalide complex and preparation method thereof
Self-aligning hydraulic steering system
Leg press
Ultraviolet semiconductor laser and method of manufacturing the same
Method and system for controlling MRAM write current to reduce power consumption