Slains Castle

by pakman

submit your photo

Hall of Fame
View past winners from this year

Please participate in Meta
and help us grow.

Tag Info

Hot answers tagged


The easy way to think about this is as follows: Imagine that instead of one camera, you had a grid of 100 cameras in a 10x10 array. When you fire a shot, each of them shoots at the same time. They will each have a slightly different view of the thing that you are taking a picture of. There are some mathematical models you can use to sort of "reverse ...


Here is my nutshell after reading through Ren Ng's very approachable paper. In a traditional digital camera the incoming light is focused onto a plane, the sensor, which measures brightness at each photosensitive cell, pixel. This produces a final image in the sense that the resulting raster of values can be plotted as a coherent image. A light-field ...


I'm not sure about reference code; this is relatively new, and mostly what I can find are papers, not implementations with open code. A key paper is Fourier Slice Photography, by Ren Ng at Stanford University — now, not surprisingly, at Lytro. There's an abstract of the paper here, with a few nice pictures. This doesn't give you something that you can take ...


You are not clipping the intermediate RGB values. From the sRGB Wikipedia article you linked to, The intermediate parameters R, G and B for in-gamut colors are defined to be in the range [0,1], ... The linear RGB values are usually clipped to that range, with display white represented as (1,1,1) From the W3C sRGB spec you linked to, ... XYZ are ...


Here are some of the ways: I use a monochromator, light sphere, and a photodiode. You can find most of those supplies at Edmund Optics and similar shops. You ...


The relationship between two objects of different sizes located different distances from the camera is determined by only one thing: shooting distance. More specifically, the distance between the camera's entrance pupil and the part of the object facing the camera. This is what is referred to as perspective. For more, please see What does it really mean ...


Yes, color sensitivity is often measured and specified in bits. DxOMark provides one example and incorporates this into their camera ratings. From the description of their "Color Depth" test: Color sensitivity indicates to what degree of subtlety color nuances can be distinguished from one another, often meaning a hit or a miss on a Pantone ...

Only top voted, non community-wiki answers of a minimum length are eligible