image averaging 中文意思是什麼
image averaging
解釋
圖像取均值-
Box each pixel is computed by averaging a 2x2 box of pixels from the source image
通過對源圖像中2x2 （ x2 ）框內的像素求平均值來計算每個像素。 -
Usually, we consider a sampling technique in which each sample is obtained by averaging a diamond portion of the picture, as we know, a large amount of information of a image in nature mainly gathered the small area, at the same time <, . but to finger print gray image, a fine degree of quantization is particularly important for samples taken in regions of a picture across which the gray level changes slowly
目前國內外圖像濾波常用的方法有線性濾波和非線性濾波。線性濾波有完善的理論基礎，數學處理也簡單，易於fft實現，在濾波技術中佔有及其重要的地位，但對于像素受污染的指紋圖像而言由於脈沖噪聲的重脫尾，處理效果並不太理想。 -
Least square method is used to eliminate linearity errors of system as result of asymmetric illumination and fitting. averaging method of neighborhood and medium filtering method are used to effectively overcome thermionic noise as result of courses of image transferring, gathering and quantization and so on
對由於光照不均以及安裝等存在的系統線性誤差，採用最小二乘法線性擬合加以消除；對由於圖像採集、傳輸、量化過程中產生的熱電子噪聲，利用了鄰域平均和加權中值濾波方法來有效地減小。 -
In addition, robustness of the scheme against jpeg lossy compression, image enhancement, noise addition and statistical averaging attacks among others are provided
此外，文中還分析了演算法對jpeg壓縮、圖像增強、加入噪聲及共謀攻擊等操作的魯棒性。
分享友人