APPARATUS AND METHOD FOR REDUCING POPPING ARTIFACTS FOR MULTI-LEVEL LEVEL-OF-DETAIL TERRAINS
First Claim
1. An apparatus for reducing popping artifacts for multi-level level-of-detail terrain images, comprising:
- a terrain patch constructor for forming terrain patches from multi-level level-of-detail patches;
a level-of-detail deciding unit for receiving the generated terrain patches from the terrain patch constructor and deciding a level-of-detail for each of the received terrain patches according to the camera distance;
a controller for determining whether adjacent terrain patches exist or not; and
a tapering unit for receiving terrain patches with neighboring patches of adjacent level-of-detail from the level-of-detail deciding unit in response to the control of the controller and smoothly connects two terrain patches by applying a tapering technique.
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Abstract
Provided are an apparatus and method for reducing the popping artifacts of level-of-detail terrain images. The apparatus includes a terrain patch constructor, a level-of-detail deciding unit, a controller, and a tapering unit. The terrain patch constructor forms terrain patches from multi-level level-of-detail patches. The level-of-detail deciding unit receives the generated terrain patches from the terrain patch constructor and decides a level-of-detail for each of the received terrain patches according to the camera distance. The controller determines whether adjacent terrain patches exist or not. The tapering unit receives terrain patches together with neighboring patches of adjacent level-of-detail from the level-of-detail deciding unit in response to the control of the controller and smoothly connects two terrain patches by applying the tapering technique.
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Citations
9 Claims
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1. An apparatus for reducing popping artifacts for multi-level level-of-detail terrain images, comprising:
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a terrain patch constructor for forming terrain patches from multi-level level-of-detail patches; a level-of-detail deciding unit for receiving the generated terrain patches from the terrain patch constructor and deciding a level-of-detail for each of the received terrain patches according to the camera distance; a controller for determining whether adjacent terrain patches exist or not; and a tapering unit for receiving terrain patches with neighboring patches of adjacent level-of-detail from the level-of-detail deciding unit in response to the control of the controller and smoothly connects two terrain patches by applying a tapering technique. - View Dependent Claims (2, 3, 4, 5)
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6. A method for reducing popping artifacts for multi-level level-of-detail terrain images, comprising the steps of:
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at a terrain patch constructor, forming terrain patches by applying information about heights of terrains to patches having multi-level level-of-detail; at a level-of-detail deciding unit, deciding a level-of-detail for each terrain patch according to the camera distance; and at a tapering unit, smoothly connecting two terrain patches having adjacent level-of-detail by applying the tapering technique. - View Dependent Claims (7, 8, 9)
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Specification