How to extract the gray value of gray image and represent it with two-dimensional array?

[Alert77]

Hello!

I am new to Labview and would like some help. I want to extract the pixel value of a gray image for subsequent defect detection. How should I write the program?

Like this picture:

Please tell me more details,thank you very much!

[Jay14159265]

Step 1) Make a vi that opens the image file.

Step 2) Report back to this thread with progress on the open image file vi. 

[Gaoke · Accepted solution]

Assume you do not want to use NI Vision, just want to develop based on LabVIEW basic functions, then

1) use "read JPEG File.vi" read your image;

2) unbundle the image data from the step1 result, if you want to have flatten data;

3) use "Unflatten Pixmap.vi" if you want to unflatten data.

[Alert77]

Thank you very much for your reply, but I just started to study, so I don't understand your reply very well. But I received a more detailed answer. Thank you in the end!

[Alert77]

Thank you very much for your answer, but I would also like to take the liberty to ask, what should I do if I need to use Ni vision?

[Gaoke · Accepted solution]

if you have NI Vision, then you can use "IMAQ GetPixelValue" to obtain the pixel value in you image directly.

[Alert77]

Thank you very much! I got the data.