| 摘要 |
Because of the increasing size of digital images available, an interactive rendering speed at a high display quality continues to be a challenging task. According to the present invention, a sampling frequency of a ray casting for generating the projection image is varied in dependence of information derived from the 3 D volume data during rendering. Furthermore, an interpolation is performed for skipped pixels for which no ray casting was performed in the projection image, based on-this information. Advantageously, the present invention allows for an improved image quality, while reducing a computation time required to generate an output image.
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