Hi thanks for the lib!
Context: I have a color image Array2<RGBA8>, and want to visualize it using rust-numpy lib (a binding to python numpy). However, .to_pyarray() complains, so I should convert it into Array3<u8>.
Question: How can I do that - what is the correct/fast way to do so? IMHO the fastest way should even have no memory copy at all, since RGBA8 is compact 4-byte data. But one memory copy is also acceptable.
I have come up with a very slow method but I hope there are other ways: extract Array2<RGBA8> into four Array<u8> for each of 4 channels, and stack! them together. Its performance seems to be quite slow.
Hi thanks for the lib!
Context: I have a color image
Array2<RGBA8>, and want to visualize it using rust-numpy lib (a binding to python numpy). However,.to_pyarray()complains, so I should convert it intoArray3<u8>.Question: How can I do that - what is the correct/fast way to do so? IMHO the fastest way should even have no memory copy at all, since RGBA8 is compact 4-byte data. But one memory copy is also acceptable.
I have come up with a very slow method but I hope there are other ways: extract
Array2<RGBA8>into fourArray<u8>for each of 4 channels, andstack!them together. Its performance seems to be quite slow.