An analog gamma correction method for high dynamic range applications

2011 ◽  
Author(s):  
Yuan Cao ◽  
Amine Bermak
Keyword(s):  
Dynamic Range ◽  
High Dynamic Range ◽  
Correction Method ◽  
Gamma Correction ◽  
High Dynamic

scholarly journals An Analog Gamma Correction Scheme for High Dynamic Range CMOS Logarithmic Image Sensors

Sensors ◽  
2014 ◽  
Vol 14 (12) ◽  
pp. 24132-24145 ◽  
Author(s):  
Yuan Cao ◽  
Xiaofang Pan ◽  
Xiaojin Zhao ◽  
Huisi Wu
Keyword(s):  
Dynamic Range ◽  
High Dynamic Range ◽  
Image Sensors ◽  
Gamma Correction ◽  
Correction Scheme ◽  
High Dynamic

scholarly journals RESEARCH ON COLOR CORRECTION METHOD OF GREENHOUSE TOMATO PLANT IMAGE BASED ON HIGH DYNAMIC RANGE IMAGING

2021 ◽  
pp. 393-402
Author(s):  
Min Li
Keyword(s):  
Tomato Plant ◽  
Dynamic Range ◽  
High Dynamic Range ◽  
Correction Method ◽  
Color Correction ◽  
High Dynamic Range Imaging ◽  
Range Imaging ◽  
Plant Image ◽  
High Dynamic ◽  
Band Image

In this paper, aiming at the need of stable access to visual information of intelligent management of greenhouse tomatoes, the color correction method of tomato plant image based on high dynamic range imaging technology was studied, in order to overcome the objective limitation of complex natural lighting conditions on the stable color presentation of working objects. In view of the color distortion caused by the temporal and spatial fluctuation of illumination in greenhouse and sudden change of radiation intensity in complex background, a calibration method of camera radiation response model based on multi-exposure intensity images is proposed. The fusion effect of multi band image is evaluated by field test. The results show that after multi band image fusion processing, the brightness difference between the recognized target and other near color background is significantly enhanced, and the brightness fluctuation of the background is suppressed. The color correction method was verified by field experiments, and the gray information, discrete degree and clarity of tomato plant images in different scenes and periods were improved.

High-dynamic-range interferometric bragg-cell spectrum analyser

1986 ◽  
Vol 133 (1) ◽  
pp. 26
Author(s):  
J. Mellis ◽  
G.R. Adams ◽  
K.D. Ward
Keyword(s):  
Dynamic Range ◽  
High Dynamic Range ◽  
Spectrum Analyser ◽  
High Dynamic
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