Method and device for reducing intraframe noise

A noise and equipment technology, applied in the field of reducing intra-frame noise, can solve problems such as image blurring and affecting image quality, and achieve the effect of improving and reducing

Inactive Publication Date: 2008-05-21
南通江涌投资开发有限公司
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, using this method, that is, the LPF uses the surrounding pixels as an average value, it will cause the information on the edge of the ima

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
  • Method and device for reducing intraframe noise
  • Method and device for reducing intraframe noise
  • Method and device for reducing intraframe noise

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0068] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments.

[0069] Different from the prior art, the embodiment of the present invention reads the first K-1 pixel rows of the current frame, and obtains the current K pixel rows when the Kth pixel row arrives; takes the currently arriving pixel row as The current pixel row, among the obtained current K pixel rows, filter the middle pixel of each pixel block of size K×L; determine whether the current pixel row is the last pixel row of the current frame, If not, use the current pixel row to update the obtained current K pixel rows with the row number difference of K-1 from the current pixel row, and when the next pixel row of the current frame arrives , Get the current K pixel rows, and return to perform the filtering operation; otherwise, the process ends. In ...

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

The invention discloses a method for reducing intraframe noise, comprising the procedures as follows: Reading the K-1 rows pixel of the current frame and the current K rows pixel are obtained with the arrival of the K-th pixel; taking the currently arrived pixel row as the current pixel row and filtering the intermediate pixel point in each pixel block with size KXL in the acquired current K rows pixel; judgign whether the current pixel row is the last pixel row of the current frame. If not, updating the pixel row in the acquired current K rows pixel the rows difference between which and the current pixel row is K-1 by utilizing the current pixel row. The current K rows pixel are obtained with the arrival of the next pixel row of the current frame and returned to execute the filter operation; otherwise, the procedure is finished. The invention has the advantage that the invention discloses a device of reducing intraframe noise simultaneously, which can eliminate intraframe noise effectively under low-light level and improve images quality.

Description

technical field [0001] The present invention relates to image processing technology, in particular to a method and device for reducing intra-frame noise. Background technique [0002] In a low-light environment, the line noise or point noise output by the sensor (Sensor) is very large. In order to reduce the noise as much as possible and preserve the details of the original image, various methods have been proposed at present. [0003] Specifically, a relatively simple method is to use a low-pass filter (LPF) method. The LPF is a device used to transmit only signals with frequency components lower than a reference. That is to say, when an image signal with a frequency change is input to the LPF, and the amplitude of the output signal is observed, a characteristic is obtained, that is, the level of the high-frequency component is relatively low. [0004] However, when observing from different points, LPF uses the average value of the observed pixel and its surrounding neigh...

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): H04N5/217H04N5/357
Inventor 郦文其梅大伟
Owner 南通江涌投资开发有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap