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Method and device for enhancing visual characteristics of imaging system

A technology of visual characteristics and imaging system, applied in image signal generators, color signal processing circuits, etc., can solve problems such as unsatisfactory mapping and unsatisfactory display effects, achieve fast computing speed, easy implementation, and reduce storage resource consumption Effect

Active Publication Date: 2015-02-04
山东幻科信息科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The present invention not only effectively solves the problem of unsatisfactory display effect, better satisfies the visual characteristics of human eyes, but also effectively solves the problem of unsatisfactory mapping, and realizes the balance of speed, resources and display effect

Method used

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  • Method and device for enhancing visual characteristics of imaging system
  • Method and device for enhancing visual characteristics of imaging system

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Such as figure 1 As shown, the signal source provides an analog signal, and after the AD acquisition module 1, it is converted into a digital signal and enters the next module. After performing signal processing such as FIR and FFT in the signal processing and imaging module 2, it enters the next module. In the logarithmic processing module 3, after taking approximate logarithms to meet the visual characteristics of the human eye, and then taking the maximum value and other operations to strengthen the relative strength of the signal, enter the next module. In the function fitting module 4, the conversion of the signal level to RGB is mainly realized. Finally, through the LCD display module 5, the processed RGB imaging data is sent to the LCD screen for display and imaging. The data cached in the above modules is read and written in the storage module 8 .

[0065] The function completed by the AD acquisition module 1 is to convert the analog signal provided by the fr...

Embodiment 2

[0098] Embodiment 2: Different from Embodiment 1, in the first step, the error is reduced by the following simple and effective compensation method with small error:

[0099] Method 2: when x r When ≥L / 2, use the straight line s=dx r +e method for linear fitting. Where d, e are coefficients and d≠0, s is x r The corresponding function value in the range of ≥L / 2. when x r When -n (n is a positive integer) The fitting method of segmenting the signal strength one by one is close to the ideal operation curve. Such as Figure 8-12 shown. Among them, the solid line is the ideal ideal operation curve, and the dashed line is 2 -n Segmental approximation and linear compensation fitting curve, dotted line is linear segmental fitting curve, dotted circle line is 2 -n Fitting the curve piecewise.

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Abstract

The invention discloses a device for enhancing visual characteristics of an imaging system. The device comprises a logarithm processing module and a function fitting module, the logarithm processing module is used for performing logarithm approximation and maximizing operation for signals and weighting and scaling the signals to grade the signals, and the function fitting module is used for mapping the signals into smoothly transited RGB (red-green-blue) colors according to signal level. The invention further provides a method for enhancing the visual characteristics of the imaging system. The method includes the steps of logarithm processing and function fitting. Signal amplitude is rapidly and smoothly transited into the RGB colors by low storage resource consumption. The problem of unsatisfactory display effects and mapping is effectively solved, the visual characteristics of human eyes can be more effectively satisfied, and speed, resources and the display effects are balanced.

Description

technical field [0001] The invention relates to a method and a device for enhancing the visual characteristics of an imaging system. Background technique [0002] A method of segmenting the signal strength into a small number of levels for RGB addressing is adopted. The advantages of this approach are low memory consumption and high speed. However, smooth color transitions cannot be achieved. [0003] A method of segmenting the signal strength into enough levels for RGB addressing is employed. The advantage of this approach is that the color transitions are noticeably smoother. But it has to open up a lot of storage space for this, and the addressing speed is slow. [0004] Simply use the fitting function to map the signal intensity to the RGB color method. This method cannot satisfy the visual characteristics of the human eye very well, and the display effect is not ideal. [0005] Using the method of direct logarithmic calculation, the advantage of this method is tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/04H04N9/64
Inventor 王丰贵苗国强周锐杨秀蔚张延波宋伟宁张琳崔洪亮成巍
Owner 山东幻科信息科技股份有限公司