how to convert image from grayscale to binary

[VandanaR]

Hello,

I m reading a 32-bit colour image using IMAQ read options and converting it into grayscale. In, order to perform few morphological operators like dilation, filling holes and erosion. I want to convert the grayscale image to binary image. When I use the IMAQ auto2threshold 2 vi to convert it to binary image the output image is just a black but when I convert the image to array values I can see 0s and 1s.  Help, me figure out why do I just get a plain black image . Using labview 2015 version and IMAQ developement module.

[TiTou]

I think you simply have to right clic on your "binary image" display on the front panel, go to "palette" and select "Binary"

[VandanaR]

Thank you ! I have got the binary image now . 

[VandanaR]

Is there any other way to get only black and white image ? So, to it better for analysing the image when I detect the corners. 

[TiTou]

Well... can you post the image file and your VI so we can try?

When you convert the colour image to a greyscale image, what method do you use and what plane do you extract?

Maybe you should have a look at the example for color threshold.

[Hatef.fouladi]

that is easy
just use IMAQ Equalize VI after using threshold

[VandanaR]

Hello,

I have used the equalize vi and got a black and white image. Now, how to perfrom segmentation of the erode image ? 

Thanks ! 

[Hatef.fouladi]

your question topic is how to convert image from grayscale to binary
but what you ask is different now!
you can use erode morphology before using equalize by binary morphology vi or after that by grayscale morphology vi