Shadow Map Construction using 2D Homography 
Trinh Hien Anh1, Trinh Xuan Hung2
1Trinh Hien Anh, Virtual Reality Department, Institute of Information Technology, Hanoi, Vietnam.
2Trinh Xuan Hung*, Virtual Reality Department, Institute of Information Technology, Hanoi, Vietnam.
Manuscript received on March 20, 2020. | Revised Manuscript received on April 21, 2020. | Manuscript published on April 30, 2020. | PP: 2485-2488 | Volume-9 Issue-4, April 2020. | Retrieval Number: D6480049420/2020©BEIESP | DOI: 10.35940/ijeat.D6480.049420
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In computer graphic applications, shadow plays an important role in expressing the reality of an object. Shadow shows the relationship between objects in space. Shadow map is one of the methods that meet the demand simplification in implementation and speed. This method made an alias around the border of shading. In this paper, we proposed a method using a 2D homography transformation. This method reduces the unused area in the shadow maps, so it can help to minimize the alias. With the experiment in Van Mieu Tran Bien- a Vietnamese historical place, we compare the method with others.
Keywords: shadow map, augmented reality, GPU.