Progressive Refinement: Ray Tracing (Graphics), Algorithm, Alpha Compositing - Brossura

 
9786133662476: Progressive Refinement: Ray Tracing (Graphics), Algorithm, Alpha Compositing

Sinossi

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Progressive refinement is a ray tracing algorithm that quickly reveals coarse structure of an image, and gradually reveals additional detail over time. The first pixel is rendered as a single rectangle occupying the entire work area. The second through fourth each occupy a quarter of the work area. Sufficient progression will refine the image until the rendered rectangles correspond to a target resolution (for example, a screen resolution). Rectangles are laid out with an overlap pattern so as to avoid unnecessary rendering.

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