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

Image processing apparatus and an image processing program

An image processing device and image processing technology, applied in image data processing, image communication, image enhancement, etc., can solve problems such as unclearness and low contrast, and achieve the effect of emphasizing contrast

Active Publication Date: 2015-09-23
SHIMADZU CORP
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Generally, when an image includes a bright area (area with high luminance value) and a dark area (area with low luminance value), there is a di

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
  • Image processing apparatus and an image processing program
  • Image processing apparatus and an image processing program
  • Image processing apparatus and an image processing program

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0037] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0038] figure 1 Is a block diagram of the radiographic imaging device according to the embodiment, figure 2 Is a flowchart showing the flow of a series of image processing involved in the embodiment, image 3 It is a schematic diagram of brightness histogram and color scale conversion (tone curve), Figure 4 Is an example of the weighting coefficient when the contrast is emphasized, Figure 5 Is an example of weighted addition used to calculate the gradation conversion value, Image 6 It is a flowchart showing the flow of processing by the gradation conversion unit. In this embodiment, as the object of image processing, a digital image (input image), which is a radiographic image obtained by a radiographic imaging device, is taken as an example for description, and as the color scale of pixels in the input image and image processing The corresponding relationship related ...

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 representative value calculator calculates a representative value which is a luminance value representing a main inspection object area from an input image. On the other hand, an image divider divides an image area of the input image, and sets a plurality of divided ranges. A factor calculator calculates a tone conversion factor for enhancing or suppressing contrast adjacent the representative value calculated by the representative value calculator for each area (each divided area) divided by the image divider. A tone converter converts the tone of each pixel of the input image based on the tone conversion factor for the range divided by the image divider, which range includes a pixel for image processing, and ranges adjacent that range. As a result, the contrast of the area for which enhancement is desired can be enhanced optimally.

Description

technical field [0001] The present invention relates to an image processing device and an image processing method for processing an input image as an input digital image, and in particular relates to a technology of color scale conversion. Background technique [0002] Generally, when an image contains bright areas (areas with high luminance values) and dark areas (areas with low luminance values), there is a difference in luminance between the two areas, but the difference in luminance disappears within each area. , The contrast tends to be small and unclear. For this problem, there is known a method of generating a luminance histogram of an image whose horizontal axis is luminance value (gradation value) and whose vertical axis is frequency (frequency), and performing gradation to make the distribution of luminance uniform. By converting, the contrast of the gradation with a large number of elements (frequency of the same luminance value) is emphasized. Contrast can be e...

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
IPC IPC(8): G06T5/00G06T7/00
CPCG06T7/408G06T7/0081G06T5/00G06T2207/10024G06T5/40G06T5/008G06T2207/20021H04N1/4074
Inventor 大野义典
Owner SHIMADZU CORP
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