Read the bus number

Hello

I'm new to machine vision and wish you can help me. I would like to read the number of bus of a regular bus image (fig.1). I used OCR training train characters (buses), but I noticed that each image was threshold to read the bus number correctly and when I insert another image, it does not read the number correctly unless I change the threshold sessions. Can I have several files (.abc) and use all of them in my program? Is there another solution rather than using a large number of files (.abc)?

Second, do you have any suggestion to allocate KING (region of interest) around the bus number automatically without using the mouse? I mean by

automatically that when I open the image in my program (.vi), it will search the number in the image and then allocates KING around this number.

Rami

Rami,

Unless you can get a homogeneity in your images (i.e. the image comes from the same distance and angle each time), you will encounter this problem. The character set is simply not enough strong to manage the differences in these different images. Its typical use is for images, taken a fixed distance and direction of the target. So, if all of your images will vary in these respects, then a single character set must be created for each instance.

Best regards

Tags: NI Hardware

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