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Real time Contrast Stretching in Low light level Image Processing(PDF)

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
1997年04期
Page:
9-12
Research Field:
Publishing date:

Info

Title:
Real time Contrast Stretching in Low light level Image Processing
Author(s):
Chen Qian Gu Guohua Bai Lianfa Wang Yu
School of Electronic Engineering and Optoelectronic Technology, NUST, Nanjing 210094
Keywords:
image enhancement real t ime pro cessing gray scale t ransformat ions low -light-level imag e
PACS:
TN223
DOI:
-
Abstract:
Low cont rast is one of the main char acterist ics of the low -lig ht-level imag e, and contr ast st retching is the important technical metho d to enhance the image. In this paper, the basic principle o f realizing cont rast st retching by grey-level transforming is described in detail . By analysing the histog ram of low -light-level image in different illuminance, the special grey-level t ransforming funct ion is established and the development of the circuit is f inished, so the real-time pr ocessing o f the low -light-lev el image is r ealized. In low -l ig ht-level television system, this method can be used direct ly and the quality of the image can be impr oved great ly.

References:

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Memo

Memo:
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Last Update: 2013-03-29