Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High dynamic range image signal generation and processing

A high dynamic range, image signal technology, applied in image data processing, color signal processing circuits, image communication, etc., to achieve the effect of improving backward compatibility

Active Publication Date: 2014-02-12
KONINKLIJKE PHILIPS NV
View PDF5 Cites 45 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Another key issue, of course, is the resulting image quality

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High dynamic range image signal generation and processing
  • High dynamic range image signal generation and processing
  • High dynamic range image signal generation and processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0066] figure 1 The figure shows an example of an audiovisual distribution path. In this example, the content provider device 101 generates an audiovisual content signal for an audiovisual content item such as eg a movie, a television program or the like. In particular, the content provider device 101 may encode the audiovisual content according to an appropriate encoding format and color representation. In particular, the content provider device 101 may encode the images of the video sequence of the audiovisual content item in accordance with a suitable representation such as eg YCrCb. The content provider device 101 may be considered to represent a production and distribution studio that creates or broadcasts the content.

[0067] The audiovisual content signal is then distributed to the content processing device 103 via the distribution path 105 . The content processing device 103 may eg be a set-top box residing at a particular consumer of the content item.

[0068] Th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An apparatus generates an image signal in which pixels are encoded in N-bit words which encode at least a luma per pixel. A receiver (201) obtains high dynamic range pixel values in accordance with a first color representation in M-bitwords. A first generator (203) includes the high dynamic range pixel values in the image signal in the N-bit words according to a second color representation. A second generator (205) includes in the image signal an indicator that high dynamic range pixel values are encoded. In some examples, the high dynamic range pixel values may be provided in a segment that can alternatively contain high or low dynamic range pixel values, and the indicator may indicate which type of data is included. The approach may e.g. facilitate introduction of high dynamic range capability into e.g. HDMI systems.

Description

technical field [0001] The invention relates to the generation and / or processing of image signals comprising high dynamic range pixel values. Background technique [0002] Digital encoding of various source signals has become increasingly important over the past few decades as digital signal representation and communication increasingly replaces analog representation and communication. There is ongoing research and development on how to improve the quality obtainable from encoded images and video sequences while keeping the data rate at an acceptable level. [0003] An important factor in perceived image quality is the dynamic range that can be reproduced when the image is displayed. Conventionally, however, the dynamic range of reproduced images tends to be greatly reduced relative to normal vision. In fact, the luminance levels encountered in the real world span a dynamic range of up to 14 orders of magnitude from moonless nights to looking directly at the sun. On a sun...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/00G09G5/02
CPCG09G2370/04G09G2340/06H04N9/64G09G5/02G09G2370/12G09G5/006H04N19/98H04N19/182H04N19/186H04N19/70G06T9/00
Inventor P.S.纽顿W.德哈安
Owner KONINKLIJKE PHILIPS NV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com