关键词: 高动态范围, 多尺度色调映射, 图像分解, 非局部均值滤波

Abstract: To display a high dynamic range image in traditional output devices, a multi-scale tone mapping approach using non-local means filter is presented. The proposed approach produces a series of coarsening images. The original image is decomposed into a base layer, containing larger scale variations in intensity, and some detail layers capturing the smaller scale details. The base layer and detail layer are dealt with different strategies respectively and followed by a restoration of color information. The experimental results demonstrate the performance of the proposed method. Compared with some related approaches, this algorithm can not only avoid halo artifacts, but also preserve more details efficiently while reproducing color information in visual point of view.

Key words: high dynamic range, multi-scale tone mapping, image decomposition, non-local means filter