Real-Time Implementation of an Adaptive Simultaneous Dynamic Range Compression and Local Contrast Enhancement Algorithm on a GPU
學年 107
學期 2
出版（發表）日期 2019-06-01
作品名稱 Real-Time Implementation of an Adaptive Simultaneous Dynamic Range Compression and Local Contrast Enhancement Algorithm on a GPU
作品名稱（其他語言）
著者 Chi-Yi Tsai; Chih-Hung Huang
單位
出版者
著錄名稱、卷期、頁數 Journal of Real-Time Image Processing 16(2), p.321-337
摘要 Dynamic range compression is a fundamental function required in digital video cameras and display monitors to improve the visual appeal of color images. This paper presents a real-time implementation of an algorithm for adaptive dynamic range compression and contrast enhancement on a graphics processing unit (GPU). To achieve this, we first designed an adaptive intensity transfer function to handle the enhancement of standard-dynamic-range (8 bits/channel) images with both low- and high-intensity. The proposed algorithm then combines the intensity transfer function with an existing simultaneous dynamic range compression and local contrast enhancement (SDRCLCE) algorithm for the simultaneous compression of dynamic range and enhancement of local contrast. To reach real-time performance in processing high-resolution color images, the proposed algorithm is implemented using an NVIDIA GeForce GTX 650 Ti GPU based on NVIDIA’s Compute Unified Device Architecture (CUDA) parallel programming running on a 3.33GHz Intel Core i5-661 CPU. Compared with a LUT-accelerated implementation, the proposed GPU implementation was shown to accelerate the processing of 1024×1024 color images by 11.1 times and color images of 4096×4096 pixels by 7.5 times, including the cost of memory copy between the host and device.
關鍵字 Color image enhancement;Dynamic range compression;Contrast enhancement;Real-time implementation;GPU acceleration;NVIDIA CUDA
語言 en
ISSN 1861-8200
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者
審稿制度 否
國別 DEU
公開徵稿
出版型式 ,電子版,紙本
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