How can detect leds

#detection

asked 2014-05-20 03:53:35 -0600

robyf1
1 ●1 ●1

Hi sorry for my english, 1) I need to detect from an image how many leds are on and how many are off. 2) how can know, for each leds on, its Luminance, Lux, Cri so so

can someone help me! thanks in advance!

Roberto

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answered 2014-05-21 00:49:23 -0600

Balaji R

2065 ●4 ●22 ●45 https://in.linkedin.co...

Hi @robyf1!

The easiest way to detect & segment the LED's is by using Color Based method. You can achieve this by the following steps

Load BGR Image from File
Convert that into HSV format by using cvtcolor()
Create an Gray image Mask Mat
Find the HSV Range of LED in ON State & in OFF State [Note]Opencv uses Hue Range from 0-180.
Find the LED ON State Color Mask of the image by using the function cvInRange()
Find Contours & count the number of contours present in the Mask image. Filter the contours with respect to area if needed. You can refer this link for reference.