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Description: 基于轮廓波的图像增强处理，contourlet变换-Based on the outline of the image enhancement processing wave, contourlet transform
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Size: 496640 |
Author: 郑英杰 |
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Description: 主要是关于关于图像处理方面的matlab程序代码，有指纹方面的，图像增强方面的。-Is mainly about about matlab image processing code, there is the fingerprint area, aspects of image enhancement.
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Size: 8947712 |
Author: Ben |
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Description: AJUSTING GAMMA FOR IRIS IMAGE IN THE SEGMENTATION TAGE
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Size: 1024 |
Author: nourd |
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Description: iris recognition iris gamma adjust
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Size: 1024 |
Author: shakir |
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Description: Adjusting gamma factor in an Image:D
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Size: 1024 |
Author: BhattBrinda |
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Description: 图像预处理-图像去噪方面-滤波器-matlab的实现程序，非常清晰- ADJGAMMA- Adjusts image gamma.
function g = adjgamma(im, g)
Arguments:
im - image to be processed.
g - image gamma value.
Values in the range 0-1 enhance contrast of bright
regions, values > 1 enhance contrast in dark
regions.
Peter Kovesi
School of Computer Science & Software Engineering
The University of Western Australia
pk @ csse uwa edu au
http://www.cs.uwa.edu.au/~pk
July 2001
function newim = adjgamma(im, g)
if g <= 0
error( Gamma value must be > 0 )
end
if isa(im, uint8 )
newim = double(im)
else
newim = im
end
rescale range 0-1
newim = newim-min(min(newim))
newim = newim./max(max(newim))
newim = newim.^(1/g) Apply gamma function
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Size: 1024 |
Author: kakarot |
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Description: nonmaxsup——非最大值抑制
hysthresh——设定阈值区间，返回一个二值化图像
canny——边缘探测，图像边缘增强
adjgamma——调整图像的伽马值
findline——利用线性Hough变换和Canny边缘探测得到的线上各点的坐标
circlecoords——返回由圆的半径和圆心坐标决定的圆上各点像素的坐标
houghcircle——取一幅经过canny变换的图像，利用hough变换找到图像中的一个圆
findcircle——计算所得线上各点的坐标归纳出一个圆的半径和圆心，确定该圆的各点坐标
gaborconvolve——利用一维盖伯滤波器对图像进行处理
gethammingdistance ——返回两幅虹膜图像提取的特征码之间的海明距离
linecoords——返回一条线的上各点的x,y坐标值-nonmaxsup- non-maximum suppression hysthresh- set the threshold range, returns a binary image canny- edge detection, image edge enhancement adjgamma- adjust the image' s gamma value findline- linear Hough transform and Canny edge detection get the coordinates of each point circlecoords online- Returns coordinate houghcircle on the circle of the radius and center coordinates of the points decision pixels- After taking a picture canny transformation, using hough transform to find the image of a circle findcircle- the calculated coordinates of each point line summed up a circle of radius and center, to determine the coordinates of each point of the circle gaborconvolve- using a 维盖伯 filter for image processing gethammingdistance- returns two iris images extracted linecoords Hamming distance between the signature- a return line to the points on the x, y coordinate values
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Size: 4573184 |
Author: 廖志伟 |
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