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

Wide dynamic range image capturing apparatus

a dynamic range, image capturing technology, applied in the direction of color television details, television system details, television systems, etc., can solve the problems of image quality decline, achieve wide dynamic range, reduce saturation and noise, and optimize combined tone characteristics

Inactive Publication Date: 2010-12-30
PANASONIC CORP
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The present invention provides a wide dynamic range image capturing apparatus that can output a captured and combined image in which a signal level is continuous throughout a range even when the image has high contrast. The apparatus can capture both color and wide dynamic range images, and can automatically switch between normal image capturing and wide dynamic range image capturing based on the results of motion detection and highlight detection. The combined image data generated by combining previous frame data and current frame data has less saturation and noise, so that a moving image having a wide dynamic range can be captured without a sense of unnaturalness or awkwardness."

Problems solved by technology

Therefore, in the case of a high-contrast image in which a signal level continuously changes, a discontinuous portion is generated in the extracted portion, resulting in a decrease in 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
  • Wide dynamic range image capturing apparatus
  • Wide dynamic range image capturing apparatus
  • Wide dynamic range image capturing apparatus

Examples

Experimental program
Comparison scheme
Effect test

embodiment 1

[0028]FIG. 1 is a block diagram illustrating a configuration of a wide dynamic range image capturing apparatus according to Embodiment 1 of the present invention. In FIG. 1, 101 indicates an image capturing device for performing photoelectric conversion with respect to a subject. An image signal obtained by photoelectric conversion in the image capturing device 101 is output to a preprocess block 102.

[0029]The preprocess block 102 performs DC adjustment, gain adjustment, and gamma characteristics adjustment with respect to the input image signal. The resultant adjusted image signal is output to an image combining block 103.

[0030]The image combining block 103 has an interface for inputting and outputting write data and read data to and from a system shared memory 105, combines two pieces of frame data and performs nonlinear characteristics adjustment, and outputs a combined image signal thus generated via a memory control block 104 to the system shared memory 105. A highlight detecti...

embodiment 2

[0056]FIG. 4 is a block diagram illustrating a configuration of a wide dynamic range image capturing apparatus according to Embodiment 2 of the present invention. Embodiment 2 is different from Embodiment 1 in that a system shared memory is not used to store image data, and a dedicated frame buffer is used to control writing and reading.

[0057]In FIG. 4, 401 indicates an image capturing device for performing photoelectric conversion with respect to a subject. An image signal obtained by photoelectric conversion in the image capturing device 401 is output to a preprocess block 402.

[0058]The preprocess block 402 performs DC adjustment, gain adjustment, and gamma characteristics adjustment with respect to the input image signal. The resultant adjusted image signal is output to an image combining block 403 and an output signal select block 407.

[0059]The image combining block 403 has an interface for inputting and outputting write data and read data to and from a dedicated frame buffer 40...

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

A memory control block performs in parallel a process of writing a current frame of image data captured by an image capturing device into a system shared memory, a process of reading out a previous frame of image data stored in the system shared memory, and a process of writing combined image data generated in an image combining block into the system shared memory.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]This Non-provisional application claims priority under 35 U.S.C. §119(a) on Patent Application No. 2006-20222 filed in Japan on Jan. 30, 2006, the entire contents of which are hereby incorporated by reference.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a wide dynamic range image capturing apparatus for processing video data supporting an image sensor developed for a digital camera.[0004]2. Description of the Related Art[0005]In recent years, the camera industry is remarkably moving from analog technology to digital technology. Particularly, a boom has occurred in digital still cameras, which require neither films nor development, and mobile telephones with built-in digital camera are becoming mainstream mobile telephones.[0006]At present, most digital cameras adopt signal processing which supports a sensor having a primary color filter, in favor of color reproduction. There is a demand ...

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(United States)
IPC IPC(8): H04N5/76
CPCH04N5/23245H04N5/35572H04N5/2355H04N5/235H04N23/667H04N23/70H04N23/741H04N25/587
Inventor HATANO, TOSHINOBUHATIYAMA, HIROKI
Owner PANASONIC CORP
Features
  • Generate Ideas
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com