Petroglyph H18 Khatm Al Melaha, Kalba, Sharjah

Natural Version, Petroglyph H18 Khatm Al Melaha, Kalba, Sharjah. Two panels of Syrian Wild Asses, but in two different styles. Likely Neolithic or earlier. [Fossati 2019 Messages from the Past: Rock Art of the Al-Hajar Mountains (Oman)]. Khatm Al Melaha is an archaeological site on the coast of the Oman Sea near Kalba in Sharjah, UAE. It is one of the largest rock art sites in the UAE. Over 175 stones with petroglyphs were documented and close to 400 motifs were identified. Every rock with a glyph was given an ID number and a GPS coordinate. In total 25455 terrestrial photographs, 5244 drone photographs, 44 drone videos, and 182 GPS points (+/- 1cm) were done in a single day. Petroglyphs were identified using Radiance Scaling in Meshlab, materials lighting in Substance Painter, and by changing conditions in Sketchfab. Some carvings were completely invisible when viewing. Drawings were done only when a line could be identified using one of these techniques. Reality Capture Source: Objaverse 1.0 / Sketchfab自然版本：沙迦卡巴（Kalba）哈塔姆·阿尔·梅拉哈（Khatm Al Melaha）岩画H18点位。该点位包含两组叙利亚野驴岩画，二者采用不同创作风格，年代大概率属于新石器时代或更早。[引用来源：Fossati 2019《来自往昔的讯息：阿曼哈杰尔山脉岩画》] 哈塔姆·阿尔·梅拉哈（Khatm Al Melaha）是阿联酋沙迦卡巴附近阿曼海沿岸的考古遗址，亦是阿联酋境内规模最大的岩画遗址之一。 本次共记录175余处带有岩画（petroglyph）的石刻，识别出近400个岩画母题。每一处带有雕刻的岩石均被赋予唯一编号与GPS坐标。单日累计完成25455张地面摄影照片、5244张无人机航拍照片、44段无人机航拍视频，以及182个精度达±1cm的GPS测量点。 研究团队通过MeshLab中的辐射度缩放（Radiance Scaling）、Substance Painter的材质光照调节功能，以及Sketchfab的场景条件调整来识别岩画。部分雕刻在常规视角下完全不可见，仅当通过上述任一技术可识别出轮廓线条时，才会开展绘图记录。 实景建模（Reality Capture） 数据来源：Objaverse 1.0 / Sketchfab