LOPATCH - A Real-Time Panoramic Sensor For Low Light Level And Low Contrast Imaging Applications

1979 ◽  
Author(s):  
B. Mathews ◽  
H. Sadowski
Keyword(s):  
Real Time ◽  
Light Level ◽  
Contrast Imaging ◽  
Low Light ◽  
Low Contrast

Real-time color image fusion for infrared and low-light-level cameras

2009 ◽  
Author(s):  
Junju Zhang ◽  
Yiyong Han ◽  
Benkang Chang ◽  
Yihui Yuan ◽  
Yunsheng Qian ◽  
...  
Keyword(s):  
Image Fusion ◽  
Real Time ◽  
Color Image ◽  
Light Level ◽  
Low Light

Bloch's Law for Contrast Increment Detection: The Effects of Pedestal Contrast and Light Level

Perception ◽  
1996 ◽  
Vol 25 (1_suppl) ◽  
pp. 149-149
Author(s):  
R J Snowden
Keyword(s):  
Visual System ◽  
Temporal Summation ◽  
Light Level ◽  
High Light ◽  
High Contrast ◽  
Contrast Level ◽  
Low Light ◽  
Low Contrast ◽  
Temporal Characteristics ◽  
Test Grating

The duration over which contrast detection improves (Bloch's regime) decreases with increasing light level and is often thought to reflect the temporal characteristics of the visual system. There is also some evidence to suggest that the temporal characteristics of the visual system might also change with increasing contrast level (M A Georgeson, 1987 Vision Research27 765 – 780). Here we compare temporal summation for stimuli presented on a blank field or on a high contrast background. On each trial a test grating was presented for X ms with the use of a spatial-alternate forced-choice procedure. The test grating (2 cycles deg−1) was presented superimposed on a similar pedestal grating which was also present for 500 ms prior to and after the test grating. Pedestal contrasts of 0% and 32% were tested at mean luminance levels of 150 cd m−2 and 1.5 cd m−2. The results show that both increasing light level and increasing contrast level resulted in smaller temporal summation times. In the current conditions both these effects approximately halve the summation time such that for a stimulus of low light level and of low pedestal contrast the summation time was ∼60 ms; low light, high contrast ∼30 ms; high light, low contrast ∼30 ms; and high light, high contrast ∼15 ms. The results imply that the temporal response of the visual system quickens with increasing contrast.

Real-time color transfer system for low-light level visible and infrared images in YUV color space

2007 ◽  
Author(s):  
Lingxue Wang ◽  
Yuanmeng Zhao ◽  
Weiqi Jin ◽  
Shiming Shi ◽  
Shengxiang Wang
Keyword(s):  
Real Time ◽  
Color Space ◽  
Light Level ◽  
Transfer System ◽  
Infrared Images ◽  
Color Transfer ◽  
Low Light

Simple real-time noise removal in intensified low-light-level television images

1992 ◽  
Vol 31 (17) ◽  
pp. 3196 ◽  
Author(s):  
Yuval S. Boger ◽  
Moshe Tur
Keyword(s):  
Real Time ◽  
Light Level ◽  
Noise Removal ◽  
Low Light

Noise-adaptive spatio-temporal filter for real-time noise removal in low light level images

2005 ◽  
Vol 51 (2) ◽  
pp. 648-653 ◽  
Author(s):  
Seong-Won Lee ◽  
V. Maik ◽  
Jihoon Jang ◽  
Jeongho Shin ◽  
Joonki Paik
Keyword(s):  
Real Time ◽  
Light Level ◽  
Noise Removal ◽  
Low Light ◽  
Temporal Filter ◽  
Spatio Temporal
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