计算机应用与软件
計算機應用與軟件
계산궤응용여연건
COMPUTER APPLICATIONS AND SOFTWARE
2014年
12期
268-271
,共4页
Welsh算法%彩色化%间隔取点%指导性滤波
Welsh算法%綵色化%間隔取點%指導性濾波
Welsh산법%채색화%간격취점%지도성려파
Welsh algorithm%Colourisation%Interval point picking%Guidance filtering
Welsh算法在将灰度图像彩色化的过程中取得了较好的效果，但是却存在着像素匹配过程中循环过多、速度过慢、彩色化后的图像存在噪声的问题。分析Welsh算法的不足之处，采取在彩色图像中间隔取点的办法，减少循环次数。同时针对彩色化后的图像中存在噪声的问题，使用指导性滤波对迁移后的图像进行优化，去掉噪声的干扰。通过实验表明，经过指导性滤波处理的图像可以产生出更好的效果，使图像的效果更清晰和自然。
Welsh算法在將灰度圖像綵色化的過程中取得瞭較好的效果，但是卻存在著像素匹配過程中循環過多、速度過慢、綵色化後的圖像存在譟聲的問題。分析Welsh算法的不足之處，採取在綵色圖像中間隔取點的辦法，減少循環次數。同時針對綵色化後的圖像中存在譟聲的問題，使用指導性濾波對遷移後的圖像進行優化，去掉譟聲的榦擾。通過實驗錶明，經過指導性濾波處理的圖像可以產生齣更好的效果，使圖像的效果更清晰和自然。
Welsh산법재장회도도상채색화적과정중취득료교호적효과，단시각존재착상소필배과정중순배과다、속도과만、채색화후적도상존재조성적문제。분석Welsh산법적불족지처，채취재채색도상중간격취점적판법，감소순배차수。동시침대채색화후적도상중존재조성적문제，사용지도성려파대천이후적도상진행우화，거도조성적간우。통과실험표명，경과지도성려파처리적도상가이산생출경호적효과，사도상적효과경청석화자연。
Welsh algorithm achieves good effect in grayscale image colourisation process, but there are the problems such as too many cycles in pixel matching process, too slow of the speed, and the image has noise after colourisation.Based on the analysis of the inadequacies of the Welsh algorithm, we adopt the approach of interval point picking in colour image, thus reduce the times of cycle.At the same time, aiming at the noise problem in the image to be colourised, we use guidance filtering to optimise the migrated image and remove the noise interference.It is demonstrated by the experiments that the image processed by guidance filtering can produce better results, the effect of the image is clearer and more natural.
