An Efficient Approximation for Penumbra Shadow
An Efficient Approximation for Penumbra Shadow
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In our eReader you can find the full English version of the book. Read An Efficient Approximation for Penumbra Shadow Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book An Efficient Approximation for Penumbra Shadow
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In this first test scene there is a tall block casting a shadow onto the floor. The light is placed at the front-left-top side of the block. The position of the light has been chosen so as to make the depth values of the different portions of the block vary over a large range as seen from the light, so that the characteristics of our algorithm can be demonstrated clearly.
Figure 8 shows a picture rendered by using the traditional Z-buffer algorithm, where the light is point-type. This picture g...ives us a good feeling about the geometrical configuration of the test scene, and also can be used to be compared with other pictures of penumbra sha- dows.
We now replace this point light source by a square shaped light source. Fig. 9 to Fig. 11 are generated by using the same light source, but with different depth map structures, which clearly show different shadow effects. Fig. 9. A to Fig. 9. C all use a single depth map, but for each image the projection plane for computing the depth map has been placed at a different distance from the light.
What to read after An Efficient Approximation for Penumbra Shadow?
You can find similar books in the "Read Also" column, or choose other free books by Ken Perlin to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
In this first test scene there is a tall block casting a shadow onto the floor. The light is placed at the front-left-top side of the block. The position of the light has been chosen so as to make the depth values of the different portions of the block vary over a large range as seen from the light, so that the characteristics of our algorithm can be demonstrated clearly.
Figure 8 shows a picture rendered by using the traditional Z-buffer algorithm, where the light is point-type. This picture g...ives us a good feeling about the geometrical configuration of the test scene, and also can be used to be compared with other pictures of penumbra sha- dows.
We now replace this point light source by a square shaped light source. Fig. 9 to Fig. 11 are generated by using the same light source, but with different depth map structures, which clearly show different shadow effects. Fig. 9. A to Fig. 9. C all use a single depth map, but for each image the projection plane for computing the depth map has been placed at a different distance from the light.
What to read after An Efficient Approximation for Penumbra Shadow?
You can find similar books in the "Read Also" column, or choose other free books by Ken Perlin to read onlineMoreLess
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