Browsing by Subject "shading"
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Item A shader based adaptation of selected sixteenth century maps(Texas A&M University, 2008-10-10) Haque, Shaila SabrinaThis research develops a technique focused on shading and texturing, with an emphasis on line work and color, to emulate the unique qualities of copperplate line-engraving from 16th century cartography. A visual analysis of selected maps determines the defining characteristics adapted for three-dimensional computer generated environments. The resulting work is presented in a short time-based animation.Item Chinese Ink-and-Brush Painting with Film Lighting Aesthetics in 3D Computer Graphics(2015-01-23) Liu, SiranThis thesis explores the topic of recreating Chinese ink-and-brush painting in 3D computer graphics and introducing film lighting aesthetics into the result. The method is primarily based on non-photorealistic shader development and digital compositing. The goal of this research is to study how to bing the visual aesthetics of Chinese ink-and-brush painting into 3D computer graphics as well as explore the artistic possibility of using film lighting principles in Chinese painting for visual story telling by using 3D computer graphics. In this research, we use the Jiangnan water country paintings by renowned contemporary Chinese artist Yang Ming-Yi as our primary visual reference. An analysis of the paintings is performed to study the visual characteristics of Yang's paintings. These include how the artist expresses shading, forms, shadow, reflection and compositing principles, which will be used as the guidelines for recreating the painting in computer graphics. 3D meshes are used to represent the subjects in the painting like houses, boats and water. Then procedural non-photorealistic shaders are developed and applied on 3D meshes to give the models an ink-look. Additionally, different types of 3D data are organized and rendered into different layers, which include shading, depth, and geometric information. Those layers are then composed together by using 2D image processing algorithms with custom artistic controls to achieve a more natural-looking ink-painting result. As a result, a short animation of Chinese ink-and-brush painting in 3D computer graphics will be created in which the same environment is rendered with different lighting designs to demonstrate the artistic intention.Item Cotton Response to 1-Methylcyclopropene Under Different Light Regimes and Growth Stages: Lint Yield and Yield Components(2010-10-12) Carden, Charles WarrenLow photosynthetic photon flux density (PPFD) during certain growth periods of cotton (Gossypium hirsutum L.) has been shown to impact yield, ethylene synthesis, and fiber quality. Previous research with shading has shown that lint yield can be significantly reduced in the latter stages of growth. This two-year field study was conducted at the Texas A&M AgriLife Research Farm in Burleson County, Texas, in 2008 and 2009. The study evaluated the impact of an 8-day period of shade (63 percent reduction of PPFD) on cotton yield parameters, fiber quality, and the impact of 1-methylcyclopropene (1-MCP), an ethylene inhibitor, to alter detrimental cotton responses when applied as a foliar spray under shaded and non-shaded conditions. Shade and 1-MCP were imposed at four developmental stages of growth: pinhead square (PHS), first flower (FF), peak flower (PF), and boll development (BD). Data pooled over both years indicated that there were no significant differences in yield for 1-MCP treatments; however, numerical differences existed. Shade applied during the BD stage of development showed significantly lower yield than the untreated control. These results showed a decline in seed cotton and ginned seed cotton by 522 and 207 kg ha-1, respectively. To further analyze further yield components, box-mapping was conducted during both years. However, this data failed to explain consistent patterns of the observed yield responses. Data was also collected to determine the amount of fibers per seed and seed weights. Cotton fiber data did not show consistent correlations with the numerical increases and significant decreases in yield. Electrolyte leakage and stomatal conductance data also were collected. Electrolyte leakage showed no statistical differences when compared to the untreated control. Stomatal conductance measurements showed no consistency for treatments during both years.