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Ray Tracing: Depth Of Field
https://ray-tracing-conept.blogspot.com/2015/01/depth-of-field.html#:~:text=Depth%20Of%20Field%3A%20In%20real%20world%2C%20camera%20has,of%20certain%20size%20and%20has%20certain%20focal%20length.
How to implement Depth of Field in Ray Tracer? - Stack …
https://stackoverflow.com/questions/10012219/how-to-implement-depth-of-field-in-ray-tracer
The physically-correct DOF would require multiple renders of the scene. Cameras have depth-of-field because they are not really a pinhole model. Instead, they have an aperture that allows light in within a certain diameter. This is equivalent to taking a pinhole camera and taking a lot of pictures within that aperture and averaging them.
Chapter 23. Depth of Field: A Survey of Techniques
https://developer.nvidia.com/gpugems/gpugems/part-iv-image-processing/chapter-23-depth-field-survey-techniques
Depth of Field - CS384G Computer Graphics Final Project
https://pathtracing.home.blog/depth-of-field/
Ray Tracing: Depth Of Field
https://ray-tracing-conept.blogspot.com/2015/01/depth-of-field.html
Depth Of Field: In real world, camera has certain focal length and not all objects in the scene are in focus. Means there is blurred images when object is not in focus as shown in below image. This phenomena is called depth of field and can be implemented very easily in ray tracer by assuming the camera of certain size and has certain focal length.
CG:Skeelogy - Depth Of Field Using Raytracing
http://cg.skeelogy.com/depth-of-field-using-raytracing/
Using raytracing techniques to simulate depth of field. CATEGORIES. OPEN SOURCE; houdini (1) maya (1) webgl / three.js (5) TUTORIALS; physics simulation (1) PROGRAMMING; artificial intelligence (2) ... Using raytracing techniques to simulate depth of field. DATE. TYPE. EFFORT. Mar 2007. Rendering.
Chapter 10 Depth of Field - Ray Tracing from the Ground …
https://www.oreilly.com/library/view/ray-tracing-from/9781498774703/K00474_C010.xhtml
The depth of field of a camera is the range of distances over which objects appear to be in focus on the film. A photographer can set the depth of field of a real camera by adjusting the camera lens. In contrast, everything is in focus with the pinhole camera we modeled in Chapter 9 because the “lens” is infinitely small.
Ray Tracer Part Six – Depth Of Field « Steve Harvey
https://steveharveynz.wordpress.com/2012/12/21/ray-tracer-part-5-depth-of-field/
Depth Of Field Adding depth of field capability to your ray tracer is well worth the effort, and you’ll be pleased t know that it is not all too difficult either. You will however need to wait significantly longer for your images to render, as every pixel now needs to send multiple rays in order reduce noise.
References for depth of field implementation in a raytracer?
https://stackoverflow.com/questions/13532947/references-for-depth-of-field-implementation-in-a-raytracer
Start by casting a ray like normal from the eye through the pixel out into the scene. Instead of intersecting it with objects in the scene, though, you just want to find the point on the ray for which the distance from the eye is equal to the selected focal distance. Call this point the focal point for the pixel.
Ray tracing (graphics) - Wikipedia
https://en.wikipedia.org/wiki/Ray_tracing_(graphics)
This recursive ray tracing of reflective colored spheres on a white surface demonstrates the effects of shallow depth of field, "area" light sources, and diffuse interreflection. In 3D computer graphics, ray tracing is a technique for modeling light transport for use in a wide variety of rendering algorithms for generating digital images .
rendering - Depth of Field in Path Tracing: What do I do …
https://computergraphics.stackexchange.com/questions/4344/depth-of-field-in-path-tracing-what-do-i-do-with-the-secondary-ray
This is exactly the same process as using the primary ray to find a colour, in basic ray tracing. After repeating this for a large number of secondary rays, the average of all those colours is the colour you assign to the pixel in question (you don't use the primary ray - its only purpose is generating the secondary rays).
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