Unanswered Questions

I'm looking at adding SVGF de-noising to my path tracer; currently I'm using plain a-trous but it can't really handle areas like soft shadows well. I've been looking at the SVGF paper https://research....

Background I am trying to create a node in Blender that would allow me to do what you would do with an audio equalizer but on the spatial frequencies of an image: A sort of panel with eight ...

Currently I'm trying to reproduce the result by the academic papers Sub-pixel Shift Estimation of Image based on the Least Squares Approximation in Phase Region by Fujimoto, Fujisawa and Ikehara (...

I am trying to apply sinc interpolation on this data set. The patches in the left image is a snapshot of AutoCAD 3d faces. Lux values are calculated for centre of each patch that are in 0.3m x 0.3m ...

On the main page for Allegorithmic's Bitmap2Material, it mentions that the software uses a Slope Based approach over a Luminance Based approach. What exactly does this mean?

I have a JPEG file with a 200 dpi scan of a sample printout from a badly maintained old drum printer. I was able to segment it and to collect all instances of each letter together, for example I would ...

I implemented this algorithm to fit given image to specified quadrilateral but the output is blank. I implemented it in C# as follows ...

I use template matching to detect a specific pattern in image.The shift determined is very shaky. Currently I apply it to R,G,B channel separately and average the result to obtain float values.Please, ...

I have written dithering software, and previously asked a question about that. Now I want to pick palette colours automatically, to make dithering easier for users. The way I've found for doing this ...

is there a way to output the power in watts from an R, G and B value? I know there are many formulae to get perceived brightness but is there one to get an objective amount (relative or otherwise)? ...

I have an image of size H,W, and I would like to draw a point on this image at x,...

I'm trying to implement a filter to denoise ambient occlusion data. What kind of filter do you suggest for the purpose? The techniques I've come across are the following: Gaussian filter (doesn't ...

I did not know where to ask, I will try it here. I work in a local planetarium and I wonder if it is possible to edit an image in such way, that when projected on spherical cupola (diameter 8 m), it ...

I've been working on implementing the technique from the paper "Designing look-and-feel using generalized crosshatching" which can be found at: http://dl.acm.org/citation.cfm?id=3085054 The paper ...

Are there some tools or softwares to merge multiple exr into a single multilayer exr? I only find a tool to split a multilayer exr into multiple exr. And it seems that Blender, Mitsuba, Darktable ...