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Progressive refinement : ウィキペディア英語版 | Progressive refinement
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.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Progressive refinement」の詳細全文を読む
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