count pixel

[willcan]

Hello all , 

i need to find the percentage of Pixels and number of pixels in intensity range  in LabVIEW only . as like the "count pixel " function in the NI VISION BUILDER AI . 

i tried with the Imaq histogram and imaq get pixel value . pls suggest me a options . 

[Gregory]

Do you have Vision Acquisition Software? You can use IMAQ image to array to get the pixel intensities.

[Zwired1]

a way without vision...

[willcan]

Hi zwired1, 

May i know, for what purpose you gave an intensity range from 200 to 256 ?

[Zwired1]

Just random numbers as placeholders.  You will need to put in numbers that suit your application.

In greyscale 0 is black and 255 is white so the range I put it would count "relatively bright" pixels.