Fundamentals of digital image processing
Fundamentals of digital image processing
Image Processing Handbook, Fourth Edition
Image Processing Handbook, Fourth Edition
The Software Optimization Cookbook
The Software Optimization Cookbook
Color Image Enhancement by Fuzzy Intensification
ICPR '00 Proceedings of the International Conference on Pattern Recognition - Volume 3
Efficient image enhancement technique by decimation method
IEEE Transactions on Consumer Electronics
Mltistage bilateral noise filtering and edge detection for color image enhancement
IEEE Transactions on Consumer Electronics
Properties and performance of a center/surround retinex
IEEE Transactions on Image Processing
IEEE Transactions on Image Processing
Shape preserving local histogram modification
IEEE Transactions on Image Processing
Adaptive image contrast enhancement using generalizations of histogram equalization
IEEE Transactions on Image Processing
Gray and color image contrast enhancement by the curvelet transform
IEEE Transactions on Image Processing
Hi-index | 0.02 |
We present in this paper a color image enhancement algorithm with high speed, high quality, and low memory usage for the camera-equipped mobile telephone. To achieve this, we first introduce a propagation scheme that estimates and computes the statistical characteristics of an image, then we apply a piecewise nonlinear transformation in the R/G/B channels separately. If the value of a pixel is below minimum or above maximum, it can be ignored by using range stretching, then a narrow intensity range between minimum and maximum may be expanded to a much broader range defined by an exponent function, which consists of mean and variance of the pixel values, and its power is chosen by the trials. The optimal strategies for fast processing in the code style are also discussed. We demonstrate our color image enhancement system and compare it with other feasible techniques on the camera-equipped mobile telephone. The proposed algorithm can be carried out in about 2 seconds using the ARM7 processor and generally performs much better than traditional contrast enhancement methods with higher image quality.