Title :
Time-space noise processing technique for low light level (LLL) image
Author :
Lianfa, Bai ; Qian, Chen ; Guohua, Gu ; Baomin, Zhang
Author_Institution :
Sch. of Electron. Eng. & Optoelectron. Technol., NUST, Nanjing, China
Abstract :
Taking the LLL CCD TV system as the object of study, on the basis of analysing a LLL image and its noise characteristics in detail, the noise theoretical model of a LLL image is described in a unified fashion by the time and space domain stochastic process. The LLL image processing system is developed. With the direction of this theoretical model, two types of new LLL image noise processing techniques, the interframe comparison denoise method and the adaptive mode filter are put forward and taken to suppress the LLL image time-space domain noise. Finally, test and analysis evaluation on the original and processed images are carried out
Keywords :
CCD image sensors; adaptive filters; filtering theory; image intensifiers; image sequences; interference suppression; space-time adaptive processing; stochastic processes; television cameras; CCD TV system; adaptive mode filter; image processing; interframe comparison denoise method; low-light-level image; noise suppression; noise theoretical model; stochastic process; time-space processing; Filters; Image analysis; Image processing; Noise level; Optical noise; Signal to noise ratio; Space stations; Space technology; Stochastic processes; TV;
Conference_Titel :
Signal Processing Proceedings, 1998. ICSP '98. 1998 Fourth International Conference on
Conference_Location :
Beijing
Print_ISBN :
0-7803-4325-5
DOI :
10.1109/ICOSP.1998.770796
