MATLAB: Do I receive “MATLAB.exe – Bad Image” when trying to start MATLAB

MATLAB

The following error message appears on startup:

MATLAB.exe – Bad Image

<a dll> is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support.

Error status 0xc0000020

Error status 0xc000007b

Best Answer

This is caused by a corruption with your MATLAB installation, usually this is caused by antivirus or other security software interfering with the installation. Please disable the anti-virus temporarily while you perform a "clean" re-installation of MATLAB. Attached below is the instructions on how to perform a "clean" installation.

For information about performing a "clean" installation of MATLAB, see the following link.

<http://www.mathworks.com/matlabcentral/answers/131519>

Related Solutions

MATLAB: Do I receive License Manager Error -14

This error could be caused by a number of things.

1. This error can occur on a client machine when the hostname in the SERVER line of your license.dat file does not match the hostname on the SERVER line of your license server's license.dat file. The client machine's SERVER line must match that of the license server. Contact your License Administrator to confirm the hostname in the SERVER line.

The license file on the client machine varies depending upon operating system and version. For R2008a and above, the license file is generally called network.lic and is located in $MATLAB\licenses (where $MATLAB is the MATLAB installation directory). For versions prior to R2008a, the license file will generally be the following:

Windows

---------

 $MATLAB\bin\win32\license.dat (for 32-bit MATLAB)
 $MATLAB\bin\win64\license.dat (for 64-bit MATLAB)

Linux/Unix/Mac

------------------

 $MATLAB/etc/license.dat

2. This error can also occur if the hostname of your license server is not resolvable. To test this, run the following command from a terminal/command prompt:

 ping <hostname>

where <hostname> is the hostname of the license server as it appears on the SERVER line of your license.dat file.

If the output of the above command comes back as 'unreachable' or 'unresolvable', then please contact your System Administrator and have them address this issue.

MATLAB: How to convert a “Java Image” object into a MATLAB image matrix

There is no built-in function to convert Java images into MATLAB images. However using the Java API you can extract the data from a Java image and store it as a matrix, which is MATLAB's image representation.

Below is an example of converting a MATLAB image to Java and back to a MATLAB image. The image used in this example is part of the MATLAB demos and is on the MATLAB path. In this example, the "getPixels" function of the Java class "Raster" returns the RGB values for the image.

Depending upon the format of your Java image, additional work may be required. Java images can be stored in one of many formats; the "getPixels" function returns the pixel data in that format. For more information, see the javadoc page for the java.awt.image.Raster class at

 <http://java.sun.com/j2se/1.5.0/docs/api/java/awt/image/Raster.html>
% create java image
I = imread('office_3.jpg');
javaImage = im2java(I);
% get image properties
H=javaImage.getHeight;
W=javaImage.getWidth;
% repackage as a 3D array (MATLAB image format)
B = uint8(zeros([H,W,3]));
pixelsData = uint8(javaImage.getBufferedImage.getData.getPixels(0,0,W,H,[]));
for i = 1 : H
     base = (i-1)*W*3+1;
     B(i,1:W,:) = deal(reshape(pixelsData(base:(base+3*W-1)),3,W)');
end
% display image
imshow(B);

The following are two other ways to implement this (in a more optimized manner):

Example 1: (Faster execution)

pixelsData = reshape(typecast(jImage.getData.getDataStorage, 'uint8'), 4, w, h);
imgData = cat(3, ...
        transpose(reshape(pixelsData(3, :, :), w, h)), ...
        transpose(reshape(pixelsData(2, :, :), w, h)), ...
            transpose(reshape(pixelsData(1, :, :), w, h)));

Example 2:

imgData = zeros([H,W,3],'uint8');
pixelsData = reshape(typecast(javaImage.getBufferedImage.getData.getDataStorage,'uint32'),W,H).';
imgData(:,:,3) = bitshift(bitand(pixelsData,256^1-1),-8*0);
imgData(:,:,2) = bitshift(bitand(pixelsData,256^2-1),-8*1);
imgData(:,:,1) = bitshift(bitand(pixelsData,256^3-1),-8*2);

Best Answer

Related Solutions

MATLAB: Do I receive License Manager Error -14

MATLAB: How to convert a “Java Image” object into a MATLAB image matrix

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