کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
528924 | 869617 | 2011 | 12 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Adaptive height-modified histogram equalization and chroma correction in YCbCr color space for fast backlight image compensation Adaptive height-modified histogram equalization and chroma correction in YCbCr color space for fast backlight image compensation](/preview/png/528924.png)
Automatic exposure controls in commercially available cameras often encounter difficulties in capturing scenes with backlight luminance which dominates the entire image. An Adaptive Height-Modified Histogram Equalization (AHMHE) algorithm is proposed as a compensation technique for backlight images. It simultaneously enhances contrast in both the dark and the bright areas without creating regions of degraded local contrast. Moreover AHMHE is an adaptive algorithm: thus it requires minimal user input, and its reduced computational requirement makes it suitable for real-time application. In addition to AHMHE, a chroma correction technique was applied to chroma components in the YCbCr color space to produce more vivid color images. A series of subjective and index evaluations were conducted to measure the resultant image quality improvements by the AHMHE and the chroma correction algorithms.
Figure optionsDownload high-quality image (96 K)Download as PowerPoint slideHighlights
► Backlight image compensation technique.
► Contrast enhances in both dark and bright areas without degraded local contrast.
► Chroma correction is performed after.
► Evaluations demonstrate the image quality improvement.
Journal: Image and Vision Computing - Volume 29, Issue 8, July 2011, Pages 557–568