首页> 外国专利> BRIGHTNESS CONTROL FOR SPATIALLY ADAPTIVE TONE MAPPING OF HIGH DYNAMIC RANGE (HDR) IMAGES

BRIGHTNESS CONTROL FOR SPATIALLY ADAPTIVE TONE MAPPING OF HIGH DYNAMIC RANGE (HDR) IMAGES

机译:高动态范围(HDR)图像的空间自适应音调映射的亮度控制

摘要

Techniques are provided for spatially adaptive tone mapping with dynamic brightness control. A methodology implementing the techniques according to an embodiment includes converting luminance data, from a received HDR image, to a logarithm domain and decomposing the converted data into a base layer, and one or more detail layers. The method also includes adjusting the layers, through shifting and scaling of the base layer and scaling of the detail layers, to map the amplitude data into a selected range. The method further includes converting the adjusted layers from the logarithm domain to a linear domain and calculating a tone compression parameter based on statistics of the adjusted log domain base layer. The statistics are associated with brightness of the received image. The method further includes applying a global tone compression function, based on the tone compression parameter, to the converted linear domain base layer to generate compressed linear domain layers.
机译:提供了用于具有动态亮度控制的空间自适应色调映射的技术。实现根据实施例的技术的方法包括将亮度数据从接收到的HDR图像转换为对数域,并将转换后的数据分解为基础层和一个或多个细节层。该方法还包括通过基础层的移位和缩放以及细节层的缩放来调整层,以将幅度数据映射到所选范围内。该方法还包括:将调整后的层从对数域转换为线性域;以及基于调整后的对数域基础层的统计来计算音调压缩参数。统计信息与接收到的图像的亮度相关。该方法还包括基于音调压缩参数将全局音调压缩函数应用于转换后的线性域基础层以生成压缩的线性域层。

著录项

  • 公开/公告号WO2018031153A1

    专利类型

  • 公开/公告日2018-02-15

    原文格式PDF

  • 申请/专利权人 INTEL CORPORATION;

    申请/专利号WO2017US41161

  • 发明设计人 EL MEZENI DRAGOMIR;

    申请日2017-07-07

  • 分类号G06T5;G06T7/90;H04N5/235;

  • 国家 WO

  • 入库时间 2022-08-21 12:45:45

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