利索-全球专利检索

  1. 登录
  2. 注册
发明授权
CN105787909B 用于高动态范围图像的图像处理 有权

用于高动态范围图像的图像处理
摘要：
公开了用于高动态范围图像的图像处理。描述了图像编码。使HDR输入图像中的对数亮度直方图化以产生色调映射，随其一起计算对数整体色调映射亮度图像。对对数整体色调映射亮度图像进行降尺度。对数亮度和对数整体色调映射亮度图像产生对数比值图像。对对数比值图像进行多尺度分辨率滤波产生对数多尺度比值图像。对数多尺度比值图像和对数亮度产生第二对数色调映射图像，第二对数色调映射图像被规范化以基于降尺度的对数整体色调映射亮度图像和规范化的图像输出色调映射图像。HDR输入图像和输出色调映射图像产生被量化的第二比值图像。
摘要（英）：

Image encoding is described. Log-luminances in an HDR input image are histogrammed to generate a tone-map, along with which a log global tone-mapped luminance image is computed. The log global tone-mapped luminance image is downscaled. The log-luminances and the log global tone-mapped luminance image generate a log ratio image. Multi-scale resolution filtering the log ratio image generates a log multi-scale ratio image. The log multi-scale ratio image and the log luminances generate a second log tone-mapped image, which is normalized to output a tone-mapped image based on the downscaled log global tone-mapped luminance image and the normalized image. The HDR input image and the output tone-mapped image generate a second ratio image, which is quantized.

公开/授权文献
0/0