This portrait was made from a single MVIC observation, three swaths cut across Pluto with the blue-, red-, and infrared-filter detectors. I wrote last week about how MVIC works to take these images. Because I'd written that article, I realized that, at 8000 pixels square, this portrait was too big to be a single MVIC observation, unless it had been resized. So I asked New Horizons team member Alex Parker about the processing that he did to make it.

Alex confirmed that the image had been upsampled (enlarged) by a factor of 2 as a part of his deconvolution process. I'm oversimplifying here, but deconvolution is a step in image processing where you account for the fact that your detector has an inherent blur. Before you send a scientific camera to space, you perform a lot of tests on it to understand very precisely the geometry of that blur. With an excellent model of its geometry, you can take the blur out, sharpening the images in a way that is very specific to your precise understanding of your scientific camera. Alex said that each image (blue, red, and infrared) was denoised and deconvolved on its own, and then the three images combined into the color view. That was a major step: