can't find vision acquisition express VI in control palette

[muks]

That is expected. You cant process the rgb image using greyscale processing functions. First if your image is a jpg image use

In the menu

Color-->Color plane extraction-->Extract luminance.

Now you can proceed with your grayscale processing.

[Parvathi]

I did thresholding and particle filter to sort the coins . I thought of using golden template also to sort them so that i can use reference images (say images of two sides of a coin). But how do i implement them to differentiate btwn size and diameter of all coins (say 1Re, 2 Rs, 25Ps etc)?

[Parvathi]

I did thresholding and particle filter to sort the coins . I thought of using golden template also to sort them so that i can use reference images (say images of two sides of a coin). But how do i implement them to differentiate btwn size and diameter of all coins (say 1Re, 2 Rs, 25Ps etc)?

[muks]

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Parvathi wrote:
I did thresholding and particle filter to sort the coins . I thought of using golden template also to sort them so that i can use reference images (say images of two sides of a coin). But how do i implement them to differentiate btwn size and diameter of all coins (say 1Re, 2 Rs, 25Ps etc)?

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when you are talking about golden template or pattern matchin, It means you are trying to identify or see whether certain things are present or not and not measuring!!!

You can identify the object extract them and then you have measure them using functions like caliper or circle detection. Play around with these functions in vision assistant.

[Parvathi]

i thought of using just golden template because i need to sort the coins based on its features and dont want to measure the size . So should i go with pattern matching ??

[muks]

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based on its features

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What features? If the feature is like diameter then you have to measure right?

[muks]

Can you post some images and explain the features that u want to measure?

[Parvathi]

what if i just check the patterns and sort them. The image captured from the USB camera must be compared with the two sides of coins(1 Re,2Rs, 25Ps etc). Can golden template hold many reff images ?

[muks]

you can simply sort by the rhino, lions and small lions using them as templates.

If you dont want to measure them.

[Parvathi]

but i also want to measure the diameter to distinguish between a 50Ps coin and a 25 Ps coin.

and also the thickness to differentiate a 50Ps coin and a 5Rs coin . I'm confused how to implement it in a VI