公开(公告)号：US20170103729A1

公开(公告)日：2017-04-13

申请号：US14969255

申请日：2015-12-15

申请人： STMicroelectronics Asia Pacific Pte Ltd

发明人： Yong HUANG ,  Lucas HUI

IPC分类号： G09G5/06 ,  G06T5/20

CPC分类号： G06T5/20 ,  G06T5/008 ,  G06T2207/10024 ,  G09G5/02 ,  G09G5/10 ,  G09G2320/0271 ,  G09G2320/0673 ,  G09G2340/06 ,  G09G2360/16 ,  H04N5/144 ,  H04N5/20 ,  H04N5/202 ,  H04N5/57 ,  H04N5/76 ,  H04N9/68 ,  H04N9/77 ,  H04N11/004

摘要： Various embodiments provide tone mapping of images and video from one dynamic range to an available dynamic range of a display device while preserving or enhancing image details. According to one embodiment, an enhanced tone mapping module is configured to decrease a luminance of an image or video from a high dynamic range to a standard dynamic range. Conversely, according to one embodiment, an enhanced inverse tone mapper to increase a luminance of an image or video from a standard dynamic range to a high dynamic range.

公开(公告)号：US20140294307A1

公开(公告)日：2014-10-02

申请号：US13851807

申请日：2013-03-27

申请人： STMICROELECTRONICS ASIA PACIFIC PTE, LTD.

发明人： Yong HUANG ,  Lucas HUI

IPC分类号： G06K9/46

CPC分类号： G06T7/602 ,  G06T7/62 ,  G06T2207/10016 ,  G06T2207/20052 ,  G06T2207/20056 ,  H04N5/2628 ,  H04N7/0122 ,  H04N21/234372

摘要： A system for determining an aspect ratio of image content based on an analysis of the content. In an embodiment, an analyzer is configured to receive a data input corresponding to an image in a stream of images that constitute a video sequence of images. The analyzer is further configured to determine a mathematical representation of the image content based on a power spectrum analysis of vertical components of the image in comparison to a power spectrum analysis of horizontal components of the image. Based on this comparison of the vertical frequency components to the horizontal frequency components, a determination about the original aspect ratio of the image may be determined. This determination may be used by a video processor to correctly apply aspect ratio conversion for final image output.

摘要翻译： 一种用于基于内容的分析来确定图像内容的宽高比的系统。 在一个实施例中，分析器被配置为接收对应于构成图像的视频序列的图像流中的图像的数据输入。 分析器还被配置为与图像的水平分量的功率谱分析相比，基于图像的垂直分量的功率谱分析来确定图像内容的数学表示。 基于垂直频率分量与水平频率分量的比较，可以确定关于图像的原始纵横比的确定。 视频处理器可以使用该确定来正确应用最终图像输出的宽高比转换。