Petroglyph C12 Khatm Al Melaha, Kalba, Sharjah

Natural Version with Paint, Petroglyph C12 Khatm Al Melaha, Kalba, Sharjah. One Syrian Wild Ass. 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 and Substance Painter Source: Objaverse 1.0 / Sketchfab带彩绘自然版本，岩画（petroglyph）C12：哈特姆·阿尔·梅拉哈（Khatm Al Melaha），沙迦市卡尔巴。纹样为一头叙利亚野驴，年代大概率为新石器时代（Neolithic）或更早。[引自Fossati 2019年《来自过去的讯息：哈杰尔山脉（阿曼）岩画》] 哈特姆·阿尔·梅拉哈（Khatm Al Melaha）是阿联酋沙迦市卡尔巴附近阿曼海沿岸的一处考古遗址，也是阿联酋境内规模最大的岩画遗址之一。 本次研究共记录了175余块带有岩画的石块，识别出近400个岩画母题。每一块带有刻画纹样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±1厘米的GPS测量点位。 研究团队通过MeshLab中的辐射缩放（Radiance Scaling）功能、Substance Painter的材质光照模拟，以及Sketchfab的环境条件调整功能识别岩画纹样。部分刻画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刻画线条时，才会进行纹样绘制。 Reality Capture与Substance Painter 数据来源：Objaverse 1.0 / Sketchfab