Help on converting bmp to 8bit grayscale arrays

I am using Labview 6, and need to read a bmp file and obtain the grayscale values in an array to analyse the data. What is the best way of doing this.

Hi mepgkas;
I do not have a clear idea of what you want to accomplish. I tried to go through your vi, but it is not clear to me how it is suppose to work with the images.
In the attachment you will find three VIs. The first (formula_final_2.vi) do the same as your first VI. I just modified it a little to try to understand its operation. I hope you find the modifications helpful.
The second file (formula_final_test.vi) is also your original VI. I modified it to work as a subVI. The third VI (example w gray.vi) uses the second VI as a subVI and input the two images. I assumed that picture 1 should go in ta1, picture 2 should go in ta2 and the resulting array is formed using t2 as it elements. Chances are I am wrong, however, it shoul
d give you a good starting point.
Best regards;
Enrique
www.vartortech.com
Attachments:
example_2.zip ‏43 KB

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Hi Klemen,
Thanks for your time,
I am not sure which points i need to use as reference to calculate the degree of rotation, is there any functions available to calculate the rotation, I have attached the 2d array of image. I need a little more help.
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I am not sure i understand what is the problem exactly.
Structure of DataBuffer is described by SampleModel used by same Raster
object. E.g. it might be 1 byte per xipex or 4 bytes per pixel.
In your example convertToGrayscale saves images to file as JPEG and
it seems you later read it back. It is possible what image you read back
is not greyscale but ARGB and data buffer has different format.
Technically, if you just need level of grey you may simply
call getRGB on your output image. Grey is uniform mix of R, G and B.
Also, instead of ColorConverOp you may dimply create output image of
grayscale type and draw your color input image with drawImage().
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Hi, how can i break the value for a row and column once i have converted the image to the array???????

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Hi,
Thanks for your reply.Sorry for the confusion.
I manage to change the array element by changing the row and column value. But, what i want is to allow the program to change the array element at a specified row and column value, where the new value is generated automatically by the program.
Atatched is the diagram. I've detailed out the program . you may refer to the comments in the formula node. There are 2 arrays going into the loop. If a >3, then the program will switch to b, where if b =0, then the program will check on the value of the next element which is in the same row with b but in the next column. But if b =45, another set of checking will be done at a dufferent value of row and column.
I hope that I have made the problem clear. Sorry if it is still confusing.
Hope you can help me. Thank you!!!!
Attachments:
arrayrowncolumn2.JPG ‏64 KB

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Help on converting bmp to 8bit grayscale arrays

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