PK
发帖数: 1153 | 1 我有24张512*512的16位Intensity Image
用imread把每张图读进matlab,然后把每张剪裁一下，拼成一个620*930的图Ione
让后我想用imwrite把Ione存出来，可是却总有下面的错误
imwrite(Ione,'ww.tif','tif');
??? Error using ==> imagesci\private\writetif
Couldn't open 'ww.tif' for writing.
Error in ==> imwrite at 384
feval(fmt_s.write, data, map, filename, paramPairs{:});
而且奇怪的是当我用同样的方法去处理另外一组20张512*512的16位Intensity Image时
却没有任何问题
唯一区别在于这组的Ione只有348*435。
对matlab图像处理不太熟悉，希望大虾指点 |
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z*y
发帖数: 1311 | 2 Thanks, but not work very well.
I use C.
Here is the code I generate data.
FILE *f_out = fopen("LL.dat", "wb");
fwrite(LL, sizeof(short int), 256*256, f_out);
fclose(f_out);
Then I try Matlab.
f = fopen('LL.dat', 'rb');
d = fread(f, [256,256], 'int16');
imwrite(d, 'LL.jpg', 'jpg', 'BitDepth', 16, 'Mode', 'lossless');
imwrite(d, 'LL.png', 'png', 'BitDepth', 16);
The image is not right. BTW, data LL is correct.
I verify using other ways.
Thank you for the help. |
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h***n
发帖数: 276 | 3 【 以下文字转载自 EE 讨论区 】
【 原文由 jinghanna 所发表 】
I have a sequence of grayscale images, and want to write them into one image
file, for example *.tiff file. How can I do this?
I know maybe I can use the matlab function imwrite, but when I use this func
tion, I meet some problem.
I use the following command,
imwrite(X,map,filename,fmt)
How can I determine the map term above?
Thanks a lot for your kind help! |
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x5
发帖数: 27871 | 4 imread，读进来是数组，随便怎么弄
完事再imwrite就可以了 |
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l********a
发帖数: 1154 | 5 is this in matlab?
result =
[ LL LH
HL HH]
if size(result)=[m,n]
then
LL = result(1:m/2,1:n/2);
LH = result(1:m/2,n/2+1:end);
HL = result(m/2+1:end,1:n/2);
HH = result(m/2+1:end,n/2+1:end);
imwrite(LL,'ll.jpg','jpg'); % save LL
... |
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l******a
发帖数: 3803 | 6
谢谢！
比如，ssh然后matlab -nodesktop.
用plot(xxxxx,xx)画图，然后，
imwrite存起来。
这样的话，figure是不是看不见？
但能存起来？ |
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L****8
发帖数: 3938 | 8 生成图片的matlab代码
I=zeros(128,64);
I(1:3,:)=1;
for x=1:128
Ix=I;
for t=1:x
ya=32*(x-t)/(x-1)+32;
yb=-32*(x-t)/(x-1)+32;
for y=1:64
if y <= ya && y >= yb
Ix(t,y)=1;
end
end
end
imwrite(Ix, ['Image' num2str(x) '.png'])
end
x是瀑布下尖位置 完全决定瀑布的形状和外观 |
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s*****a
发帖数: 1022 | 9 mov = aviread(filename);
得到一个struct array mov
然后循环一下
i=1:whatever
a=frame2im(mov(i));
imwrite(a,whatever);
不难吧
BTW, 我用的是matlab 6.5.0.180913a (R13) campus license |
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j**u
发帖数: 6059 | 10 imwrite(D,map,'gif_example.gif','DelayTime',0.2,'LoopCount',inf) |
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k***n
发帖数: 383 | 11 我说的是把图片写成PS或EPS
比如
imwrite(a,'a.ps')
or eps.
能这么做吗？ |
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C***S
发帖数: 175 | 12 seems .ps format is not supported by imwrite function.
you may try print('-deps', filename)
check the online manul for more detailed information. |
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s*s
发帖数: 100 | 13 就是说有个M*N*K的矩阵, 每个位置上的值代表空间中的那
一点的灰度, 怎么才能搞出3d 的图?
二维的我知道,matlab 中的imwrite就可以做到, 也可以直接
产生ppm, ptm的格式的图片,但是3d的,我就搞不定了.
要是plot3,可以有个参数表示灰度就好了...
有谁知道怎搞么? 谢谢了
听说可以用vff格式,网上找了半天,p也没找到... |
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g******s
发帖数: 733 | 14 temp2=kron(temp,ones(8));
temp2=uint8(temp2);
imwrite(temp2, 'filename.bmp','bmp');
程序执行到第一行就说内存不够。请问怎么不占内存地把数据temp2写入图像文件？
先谢了！ |
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d*******2
发帖数: 340 | 15 现在我用
imwrite(my_matrix,'my_bmp.bmp');
得到位图，但是CAD软件需要矢量图，请问有什么办法由一个二值（0和1)矩阵得到一个
精确的矢量图吗？先谢了！ |
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s*****c
发帖数: 753 | 16
Just write your own script to plot the data into a 2D
matrix, and then use imwrite.
So that script should know what resolution the jpg file will
be (can be a constant like 640*480 or can be taken as
parameter). That script should be able to determine the
scale to use (maxx, minx, maxy, miny) and calculate a
conversion factor. You have to create the marker, axis,
label (at least 0-9 and "." to mark the axis)etc. yourself.
If your figures have same scale, you can just copy the outer
part of the f |
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t******r
发帖数: 41 | 17 matlab imwrite函数有option可以改dpi |
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t**t
发帖数: 9 | 18 如果是大批量的话，matlab的图像包就很合适.
核心程序就一行：
imwrite(imread(sFileName, srcfmt), strrep(sFileName, srcfmt, dstfmt), dstfmt);
支持很多格式． |
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f*******a
发帖数: 663 | 19 开始忘贴代码了，有朋友要求，就把修改后的代码贴在这里。改动不多，可以部分提升
效率。原来的也没删，注释掉了。供参考。
=========================================================================
clear;
close all
disp('The only input needed is a distance matrix file')
disp('The format of this file should be: ')
disp('Column 1: id of element i')
disp('Column 2: id of element j')
disp('Column 3: dist(i,j)')
if(0)
% mdist=input('name of the distance matrix file (with single quotes)?\n'
);
mdist = 'example_distances.dat';
disp('Reading input dis... 阅读全帖 |
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