Napioa - Wind Origins

Napioa - Wind Origins
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14

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 ...


9

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 ...


7

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 ...


3

If you're looking for a grouping term, I don't think there is one that's used widespread or consistently, but personally I sometimes use stacking to cover these types of techniques. I just wish there were a term that could also include panorama stitching, since the main logic behind nearly all of these types of algorithms is similar--vary one specific ...


3

EDIT: Originally I misread your question to only mean increase in resolution. I do not know of any term that encompasses that an HDR but these two cover quite a bit: Super-Resolution, although it covers multiple techniques. This term has been used by camera manufacturers to describe techniques where they create a higher-resolution or increase color-depth ...


2

The purpose of the HTC dual lenses is to create a "depth map". The distance between the camera and the objects in the picture is computed : each pixel has a distance associated. The following example (from http://www.i-art3d.com/Eng/About_Depth.htm) shows a depth map : Knowing this, an algorithm can recreate artificial "depth of field" effect, emulating ...


2

I found what I believe is the answer I was looking for, which is "epsilon photography". Quoting from Wikipedia: Epsilon photography is a form of computational photography wherein multiple images are captured with slightly varying camera parameters (each image varying the parameter by a small amount ε, hence the name) such as aperture, exposure, ...


2

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 ...


2

Here are some of the ways: http://www.image-engineering.de/iq-products/iq-tools/measurement-devices/camspec http://www.image-engineering.de/iq-products/iq-tools/measurement-devices/camspecs-express I use a monochromator, light sphere, and a photodiode. You can find most of those supplies at Edmund Optics http://www.edmundoptics.com/ and similar shops. You ...


1

I don't think that there's a specific term for that in photography. A term to describe the idea of combining information of many images into one in general could be superposition.


1

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 ...


1

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 ...



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