Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and system for adjusting pixels by desired gains and factors

A technology of gain adjustment and factor, which is applied in the direction of image communication, electrical components, etc., and can solve problems such as increase

Inactive Publication Date: 2009-12-16
HEWLETT PACKARD DEV CO LP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem with this technique is that any noise initially contained in the channel is scaled up proportionally when doing linear scaling

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 system for adjusting pixels by desired gains and factors
  • Method and system for adjusting pixels by desired gains and factors
  • Method and system for adjusting pixels by desired gains and factors

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] figure 1 is a block diagram of a method 100 for adjusting a desired gain of a pixel value in accordance with an example embodiment. Method 100 (hereinafter "process") is implemented in a machine-accessible and readable medium and optionally accessible via a network. In one embodiment, this process is implemented as a service accessible via a network, such as the Internet. In another embodiment, the process is embedded in devices such as digital cameras, personal digital assistants (PDAs), digital phones, printers, laptops, desktop computers (clients), servers, peripherals, and the like. This processing enables configurable gains to the brightness and / or color channels of the image or selected portions of the image.

[0042] Images are represented electronically as collections of pixels with values. This value represents the light and color properties of the image. The light is distributed as a luminance channel (via the image's pixel values) and each color or all co...

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 low frequency values ​​of the pixel values ​​are adjusted with the desired gain. Calculate the first high frequency value of the pixel value. A second high frequency value is generated for the first high frequency value. The second high frequency value is the first high frequency value adjusted by the factor. The factor is solved as a function of the first high frequency value and the desired gain. A modified value of the pixel value is output, wherein the modified value is an adjusted low frequency value augmented with a second high frequency value.

Description

technical field [0001] The present invention relates to methods and systems for adjusting pixels. Background technique [0002] Digital images often utilize modification to account for noise and other imperfections in the captured image. These modifications may be made on the device that originally acquired the image or may be performed on a different device to which the image is subsequently transferred for modification. It should also be noted that in some cases only selected parts of the image are modified. That is, selected pixels of the image are identified for some form of correction or modification, while the remaining pixels of the image are not modified. [0003] One type of modification is for adjusting the brightness or color of an image. A typical technique for achieving this is to linearly increase the pixel values ​​of the luminance and / or color channels within the image. The problem with this technique is that any noise initially contained in the channel i...

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 Patents(China)
IPC IPC(8): H04N1/58
CPCH04N1/58
Inventor B·D·金贝尔C·L·米勒
Owner HEWLETT PACKARD DEV CO LP