A simple enhancement technique for shading in 2D images by retinex model

We propose a simple method to improve human depth sensation for 2D images without depth information. In depth perception of 2D images, a lot of human monocular depth cues are used. Here we focus attention on the shading. And the improvement of depth sensation is achieved by emphasizing it. Based on...

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Bibliographic Details
Published inTENCON 2011 - 2011 IEEE Region 10 Conference pp. 279 - 283
Main Author Ojima, S.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.11.2011
Subjects
Brightness
Graphics
Humans
Image color analysis
Image edge detection
Image Enhancement
Light sources
Lighting
Retinex
Shading
Texture
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Summary:We propose a simple method to improve human depth sensation for 2D images without depth information. In depth perception of 2D images, a lot of human monocular depth cues are used. Here we focus attention on the shading. And the improvement of depth sensation is achieved by emphasizing it. Based on the idea of painting, shade is expanded and its gradient is made steep. In order to change the pattern of shading, we modulate the reflectance components of images. Retinex model is used for estimation of the reflectance components. These reflectance components are varied to enhance shading and then are reintegrated again with the light images. Through the experiments for CG image and natural image, the effectiveness of our proposed method is illustrated.
ISBN:9781457702563
1457702568
ISSN:2159-3442
2159-3450
DOI:10.1109/TENCON.2011.6129108