Color space question

[mourya]

Hello,

I am taking a char buffer and filling it with intensities (0 to 255) and saving it as PNG. Everything is fine. Now, i am wondering which color space is my raw data ?

Thanks

[jagabo]

8 bit grayscale. But what you probably really want to know is what colorspace is it when you load it into a video program. That will depend on the program and how you treated the grayscale source before saving the file. Most programs will convert to RGB and assume computer luma levels (0-255).

[mourya]

When i am converting it into jpeg, i am giving the input colorspace parameter as GRAYSCALE. May be as you said, i have to perform some operations if i want to convert it into a colorspace.