【網(wǎng)絡(luò)多媒體教學(xué)】美圖秀秀

1、美圖秀秀當(dāng)然咯，不是學(xué)自拍今天我們講June,2015By Wendx精選課件精選課件WHAT?美圖秀秀有啥功能？June,2015By Wendx精選課件A增強(qiáng)對(duì)比度CONTRASTJune,2015By Wendx精選課件舉個(gè)栗子June,2015By Wendx精選課件哇，代碼時(shí)間到X1=imread(lena.jpg); %讀取原圖figure,imshow(X1) title(原圖);figure,imhist(X1)title(原圖灰度值分佈圖);f0=0;g0=0; %根據(jù)需要分段f1=70;g1=30;f2=180;g2=230;f3=255;g3=255; %作轉(zhuǎn)換函數(shù)曲線f

2、igure,plot(f0,f1,f2,f3,g0,g1,g2,g3)axis tight,xlabel(f),ylabel(g)title(灰度值調(diào)整曲線) &求三線段的斜率及截距r1=(g1-g0)/(f1-f0);b1=g0-r1*f0;r2=(g2-g1)/(f2-f1);b2=g1-r2*f1;r3=(g3-g2)/(f3-f2);b3=g2-r3*f2;m,n=size(X1);X2=double(X1); &轉(zhuǎn)換灰度值數(shù)據(jù)精度for i=1:m &進(jìn)行灰度值調(diào)整 增加原圖中某兩個(gè)灰度值間動(dòng)態(tài)范圍增強(qiáng)對(duì)比度Afor j=1:n f=X2(i,j); g(i,j)=0; if(f=0

3、)&(f=f1)&(f=f2)&(f0 & i0 & j=height intensity = I(i,j)+1; intensity_counter(intensity)=intensity_counter(intensity)+1; R(intensity) = handles.pic(i,j,1); G(intensity) = handles.pic(i,j,2); B(intensity) = handles.pic(i,j,3); end end end % finding the maximum occuring intensity in downsampled image ma

4、x_instance index = max(intensity_counter); I_painted(x, y, 1)= R(index); I_painted(x, y, 2)= G(index); I_painted(x, y, 3)= B(index); endendtocfigureimshow(I_painted,);title(油畫效果);Elapsed time is 139.422632 seconds. %算法耗時(shí)較長(zhǎng)，約140秒精選課件油畫F精選課件濾鏡浮雕CAMEOJune,2015By WendxG精選課件你喜歡被群毆還是被群毆濾鏡浮雕G精選課件H彩色轉(zhuǎn)灰度GRAYJune,2015By Wendx精選課件兄弟們，還忍嗎彩色轉(zhuǎn)灰度H精選課件李振邦 文丹霞 馬兆祺 鐘嘉榮李堅(jiān)波 彭俊霖 李沛濱 江 明WENDX （傳說中的文大人2333