CAJ | 학술논문

传统的约束纹理映射方法大都在满足指定的约束条件时破坏了参数化结果的保形性,为此提出一种自适应的约束纹理映射方法.通过迭代最小化一个由保形项和约束项组成的加权能量得到带约束参数化结果,并且以每步更新权重的方式来平衡这两项;在每步迭代时,每个约束点权系数的选取依赖于上次结果中该约束点距指定位置距离的一个单调函数.利用该方法可以在满足指定约束条件的前提下兼顾到结果的保形性.实验结果表明,该方法能够快速、有效地得到较好的纹理贴图效果.
전통적약속문리영사방법대도재만족지정적약속조건시파배료삼수화결과적보형성,위차제출일충자괄응적약속문리영사방법.통과질대최소화일개유보형항화약속항조성적가권능량득도대약속삼수화결과,병차이매보경신권중적방식래평형저량항;재매보질대시,매개약속점권계수적선취의뢰우상차결과중해약속점거지정위치거리적일개단조함수.이용해방법가이재만족지정약속조건적전제하겸고도결과적보형성.실험결과표명,해방법능구쾌속、유효지득도교호적문리첩도효과.
Most of the traditional constrained texture mapping methods meet the specified constrained conditions at the cost of sacrificing the parameterization's conformality. In this paper, a new adaptive constrained texture mapping method is proposed. The constrained parameterizations are computed through iteratively minimizing a weighted energy covering both conformal term and constraint term. In order to make them in balance, the weights in the energy are updated step by step. In one iteration step, the weight of each constrained vertex is dependent on a monotone function of the distance from current position of the vertex to its specified location. By this method, the conformality can be well preserved while the constrained conditions are satisfied. Experimental results show that a good texture mapping can be taken quickly and effectively.