Gray-scale resolution enhancement
Gray-scale resolution enhancement
复制标题
灰度分辨率增强
DOI：
10.1109/mmsp.2001.962727
复制
发表时间：
2001
期刊：
影响因子：
--
通讯作者：
R. Mersereau
中科院分区：
文献类型：
--
作者：
B. Gunturk;Y. Altunbasak;R. Mersereau
被分配来表示图像像素处的颜色强度的比特数通常被称为比特深度。当位深度不够时，图像会出现脊状结构，称为假轮廓。当需要低对比度细节时，位深限制变得很重要，如在医学成像、航空/卫星摄影和高质量扫描应用中。在本文中，我们研究了一种增加位深的方法。具体来说，我们表明，当一个序列的视频帧是可用的，那么它是可能的，以实现更高的比特深度，通过投影到凸集（POCS）为基础的重建方法。
The number of bits assigned to represent the color intensity at image pixels is usually referred as the bit depth. When the bit depth is not sufficient, images suffer from ridge-like structures known as false contours. Bit-depth limitations become important when low-contrast details are required, as in medical imaging, aerial/satellite photography, and high-quality scanning: applications. In this paper, we investigate a method for increasing bit depth. Specifically, we show that when a sequence of video frames is available, then it is possible to achieve a higher bit depth through a projections onto convex sets (POCS) based reconstruction method.