Patent Document ID: 20130177240
Application ID: 13547195
Patent Status: 0

Claim One:
1. Image encoder comprising: an extreme value determiner configured to determine a minimal value and a maximal value of a floating point image value of each pixel of a part of an image, an image or a group of images, wherein the floating point image value of each pixel represents a luminance value of each pixel; a floating point-to-integer converter configured to map the floating point image value of each pixel to an integer image value, wherein each integer image value lies in a predefined range of integer image values, wherein the determined minimal floating point image value is mapped to a minimal integer image value of the predefined range of integer image values and the determined maximal floating point image value is mapped to a maximal integer image value of the predefined range of integer image values, wherein the floating point-to-integer converter is configured to calculate at least one transform parameter for the part of the image, the image or the group of images based on the determined minimal floating point value and the determined maximal floating point value, wherein the floating point value of each pixel of the part of the image, the image or the group of images is mapped based on the transform parameter; and an encoder configured to encode the integer image value of each pixel to acquire and provide encoded image data of the part of the image, the image or the group of images, wherein the transform parameter is provided with the encoded image data of the part of the image, the image or the group of images.