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

A Digital Image Interpolation Algorithm with Radio Modulation Function Fidelity

A technology of digital image and modulation function, which is applied in the field of digital image interpolation algorithm with fidelity of radiation modulation function, which can solve the problems of reducing image detail resolution, loss of high-frequency information, degradation of image radiation modulation function, etc., and achieves the elimination of low-pass filtering effect, excellent geometric accuracy, and the effect of ensuring detail resolution

Inactive Publication Date: 2020-06-30
ZHEJIANG UNIV
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional interpolation algorithm will produce the effect of low-pass filtering, resulting in the degradation of the image radiation modulation function (MTF), the loss of high-frequency information, and the reduction of image detail resolution.

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
  • A Digital Image Interpolation Algorithm with Radio Modulation Function Fidelity
  • A Digital Image Interpolation Algorithm with Radio Modulation Function Fidelity
  • A Digital Image Interpolation Algorithm with Radio Modulation Function Fidelity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] Now, an exemplary implementation process of the present invention will be described in detail by taking image translation as an example, and the effects and advantages of the present invention will be illustrated by using the cubic interpolation method as a comparison.

[0052] Embodiments of the present invention are as follows:

[0053] In this embodiment, sub-pixel translation of an 8-bit grayscale image is realized through interpolation. In order to verify the fidelity performance of the radiation modulation function of the present invention, in this embodiment, the original image is shifted up by 0.375 pixels to obtain an interpolated image, and then the obtained interpolated image is shifted down by 0.375 pixels to obtain a restored image. The comparison can objectively evaluate the fidelity performance of the radiation modulation function of the interpolation algorithm.

[0054] The specific steps of implementing the sub-pixel translation of the image according ...

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 digital image interpolation algorithm with fidelity of a radiation modulation function. Subpixel interpolation is carried out for a digital image. For any subpixel position,the pixel value of the subpixel position is calculated by using specially designed horizontal and vertical interpolation coefficient formulas to interpolate the digital image. The transverse interpolation coefficient and the longitudinal interpolation coefficient are calculated by the same method and are obtained by solving a multi-constraint optimization problem. The interpolation coefficient ofthe invention has the interpolation function of the traditional interpolation algorithm, avoids the degradation of the image radiation modulation function (MTF), and ensures the detail resolution of the interpolated image. The invention solves the defect that the traditional interpolation algorithm reduces the image detail resolution.

Description

technical field [0001] The invention belongs to the field of digital image processing, and relates to an interpolation algorithm for operations such as digital image scaling, perspective transformation, and geometric correction, and in particular to a digital image interpolation algorithm for radiation modulation function fidelity. Background technique [0002] The radiation modulation function (MTF) is a function that describes the detail resolution of an image at different spatial frequencies, and it mainly examines the reduction degree of the modulation degree of the signal in the image compared with the modulation degree of the signal in the ideal imaging system. In the fields of remote sensing and medical imaging, the radiation modulation function (MTF) is an important indicator for evaluating the resolution of image details. [0003] When performing operations such as digital image scaling, perspective transformation, and geometric correction, it is necessary to interp...

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): G06T3/40
CPCG06T3/4007
Inventor 冯华君吴迪陈跃庭徐之海李奇
Owner ZHEJIANG UNIV