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我在MATLAB下面的代码来解码条形码：Matlab的条码阅读器
barcode = imread('barcode.jpg');
imshow(barcode);
pause;
barcode = rgb2gray(barcode);
barcode = histeq(barcode);
barcode = imresize(barcode, .35, 'bilinear');
imshow(barcode);
pause;
%level = graythresh(barcode);
%bw = im2bw(barcode, level);
h = edge(barcode, 'sobel', [], 'horizontal');
% dilate the horizontal edges vertically to get rid of noise
se = strel('line',20,1);
h = imdilate(h, se);
imshow(h);
pause;
v = edge(barcode, 'sobel', [], 'vertical');
se = strel('line',1,20);
v = imdilate(v, se);
imshow(v);
pause;
regions = ~h & v;
imshow(regions);
pause;
% dilate image to get barcode region
se = strel('line',9,1);
% get the barcode region
regions = imdilate(regions,se);
imshow(regions);
pause;
%regions = imcomplement(regions);
[labels,numLabels]=bwlabel(regions);
imshow(label2rgb(labels, @spring, 'c', 'shuffle'));
pause;
% find largest region
index = 0;
largest_size = 0;
for i = 0:max(unique(labels))
if sum(sum(regions & (labels == i))) > largest_size
largest_size = sum(sum(regions & (labels == i)));
index = i;
end
end
% show largest region
imshow(regions & (labels == index));
pause;
region = regions & (labels == index);
region = imcomplement(region);
% extract region from original barcode image
[rows, cols] = size(region);
for i = 1:rows
for j = 1:cols
if region(i,j) == 1
barcode(i,j) = 255;
end
end
end
imshow(barcode);
pause;
% we now have extracted the barcode
% sharpen it a little bit
yar = fspecial('unsharp');
barcode = imfilter(barcode,yar,'replicate');
imshow(barcode);
pause;
% get the highest/lowest x & y values
x1 = cols;
x2 = 1;
y1 = rows;
y2 = 1;
for i = 1:rows
for j = 1:cols
if region(i,j) == 1
if i < y1
y1 = i;
end
if i > y2
y2 = i;
end
if j < x1
x1 = j;
end
if j > x2
x2 = j;
end
end
end
end
[r,c] = size(barcode);
for i = 1:r
for j = 1:c
if barcode(i,j) >= 194
barcode(i,j) = 255;
end
if barcode(i,j) < 194
barcode(i,j) = 0;
end
end
end
%imshow(barcode);
% COPIED/PASTED FROM http://www.mathworks.com/matlabcentral/fileexchange/21899-recognize-barcode/content/runprogram.m
I=barcode;
I=im2bw(I);
imshow(I);
hold on;
[x,y]=ginput(2); %get data from click mouse
u1=x(1);
u2=y(1);
v1=x(2);
v2=y(2);
line(x,y); %paint the line between 2 point at click mouse
a = (u1:1:v1); %find out function line between 2 point
if (u1~=v1) && (u2~=v2)
g = round(((v2-u2)/(v1-u1))*a + u2 -(u1/(v1-u1)));
elseif (u1==v1)
a = u1;
end
i=1; %find the value each pixel that the line go through
h=v1-u1+1;
b=(1:1:h);
for a=u1:v1
if (I(g,a)==0)
b(i)=1;
i=i+1;
elseif (I(g,a)==1)
b(i)=0;
i=i+1;
end
end
c=b;
i=1; %find number pixels of each line in barcode picture;
s=(1:1:60);
for k=1:60
j=0;
curr=c(i);
while (c(i)==curr)&&(i<=h)
j=j+1;
i=i+1;
end
s(k)=j;
end
mau=s(2); %the first line is the sample for barcode,in another line is ratio with this
q=s./mau;
p=round(q);
doc1=(1:1:6); %decode
k=1;
for i=5:4:25
if (p(i)==3)&& (p(i+1)==2) &&(p(i+2)==1) &&(p(i+3)==1)
doc1(k)=0;
elseif (p(i)==2)&& (p(i+1)==2) &&(p(i+2)==2) &&(p(i+3)==1)
doc1(k)=1;
elseif (p(i)==2)&& (p(i+1)==1) &&(p(i+2)==2) &&(p(i+3)==2)
doc1(k)=2;
elseif (p(i)==1)&& (p(i+1)==4) &&(p(i+2)==1) &&(p(i+3)==1)
doc1(k)=3;
elseif (p(i)==1)&& (p(i+1)==1) &&(p(i+2)==3) &&(p(i+3)==2)
doc1(k)=4;
elseif (p(i)==1)&& (p(i+1)==2)&&(p(i+2)==3) &&(p(i+3)==1)
doc1(k)=5;
elseif (p(i)==1)&& (p(i+1)==1) &&(p(i+2)==1) &&(p(i+3)==4)
doc1(k)=6;
elseif (p(i)==1)&& (p(i+1)==3) &&(p(i+2)==1) &&(p(i+3)==2)
doc1(k)=7;
elseif (p(i)==1)&& (p(i+1)==2) &&(p(i+2)==1) &&(p(i+3)==3)
doc1(k)=8;
elseif (p(i)==3)&& (p(i+1)==1) &&(p(i+2)==1) &&(p(i+3)==2)
doc1(k)=9;
end
k=k+1;
end
doc2=(1:1:6);
k=1;
for i=34:4:54
if (p(i)==3)&& (p(i+1)==2) &&(p(i+2)==1) &&(p(i+3)==1)
doc2(k)=0;
elseif (p(i)==2)&& (p(i+1)==2) &&(p(i+2)==2) &&(p(i+3)==1)
doc2(k)=1;
elseif (p(i)==2)&& (p(i+1)==1) &&(p(i+2)==2) &&(p(i+3)==2)
doc2(k)=2;
elseif (p(i)==1)&& (p(i+1)==4) &&(p(i+2)==1) &&(p(i+3)==1)
doc2(k)=3;
elseif (p(i)==1)&& (p(i+1)==1) &&(p(i+2)==3) &&(p(i+3)==2)
doc2(k)=4;
elseif (p(i)==1)&& (p(i+1)==2) &&(p(i+2)==3) &&(p(i+3)==1)
doc2(k)=5;
elseif (p(i)==1)&& (p(i+1)==1) &&(p(i+2)==1) &&(p(i+3)==4)
doc2(k)=6;
elseif (p(i)==1)&& (p(i+1)==3) &&(p(i+2)==1) &&(p(i+3)==2)
doc2(k)=7;
elseif (p(i)==1)&& (p(i+1)==2) &&(p(i+2)==1) &&(p(i+3)==3)
doc2(k)=8;
elseif (p(i)==3)&& (p(i+1)==1) &&(p(i+2)==1) &&(p(i+3)==2)
doc2(k)=9;
end
k=k+1;
end
的问题是，它似乎不正确读取！
我在ginput部件上也遇到了一些麻烦，用户必须在条形码图像上创建一条线以便读取线上的像素。
你们能帮我找到的实际问题？
谢谢！
1.包括你的形象在你的问题2.所有的条形码不具有相同的加密3.精确，你的代码的一部分，不工作？ – obchardon
我认为它不起作用从我在哪里用ginput命令在图像上画线... –