www.gusucode.com > 手写数字识别系统 带有GUI界面matlab源码程序 > frODR/charcrop.m
function bw2 = charcrop(bw) % Find the boundary of the image [y2temp x2temp] = size(bw); x1=1; y1=1; x2=x2temp; y2=y2temp; %left side cntB=1; while (sum(bw(:,cntB))==y2temp) x1=x1+1; cntB=cntB+1; end %right side cntB=1; while (sum(bw(cntB,:))==x2temp) y1=y1+1; cntB=cntB+1; end %up side cntB=x2temp; while (sum(bw(:,cntB))==y2temp) x2=x2-1; cntB=cntB-1; end %down side cntB=y2temp; while (sum(bw(cntB,:))==x2temp) y2=y2-1; cntB=cntB-1; end % Crop the char bw2=imcrop(bw,[x1,y1,(x2-x1),(y2-y1)]);