how to convert from RGB to grey scale <vice versa>

[Sravan Kumar Reddy Javaji]

Hello Everyone,

I know that image.rgb2y() converts the image with 3 channel to 1 channel. But is this is the way to convert RGB image to grey scale in Torch? or is there any other way?

Also which method do we need to use, if we want to convert the image from grey scale to RGB,  Please let me know

Thanks for your time and help.

-

Regards,

Sravan

[Sravan Kumar Reddy Javaji]

For converting from channel 1 image to channel 3:

Is it fine, if I just replicate channel 1 data across all the two channels? Please let me know

-

Regards,

Sravan

[soumith]

Yes, that's fine.

--
You received this message because you are subscribed to the Google Groups "torch7" group.
To unsubscribe from this group and stop receiving emails from it, send an email to torch7+un...@googlegroups.com.
To post to this group, send email to tor...@googlegroups.com.
Visit this group at http://groups.google.com/group/torch7.
For more options, visit https://groups.google.com/d/optout.

[Seth Neiman]

If you need accurate grayscale take a look at http://stackoverflow.com/questions/687261/converting-rgb-to-grayscale-intensity.

On Thursday, April 23, 2015 at 9:04:28 PM UTC-7, smth chntla wrote:

Yes, that's fine.