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Message: 98052 BY: Yuhan Zhang (yuhanz) DATE: 2012-07-11 22:29 SUBJECT: rgb to grayscale not working   Hi all, I'm using rmagick (2.13.1) trying to convert an rgb image into grayscale. however it doesn't do the work, although the function didn't throw error. I still see rgb pixels. Here's the code that I am using: file = '/home/yuhan/workspace/testDFT/Debug/testImages/blank0.jpg' img = Magick::Image::read(file).first img = img.quantize( 256, Magick::GRAYColorspace ); img.cur_image[:Label] = "Grayscale" @result = "dimension: " + img.columns.to_s() + ":" + img.rows.to_s() + " - " + pixel.to_s() The result returned: dimension: 400:300 - red=29601, green=29601, blue=29601, opacity=0 Is there anything that I did wrong? Thank you Yuhan

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Thread Author Date rgb to grayscale not working Yuhan Zhang 2012-07-11 22:29