Petroglyph C12 Khatm Al Melaha, Kalba, Sharjah

Natural Version, 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 Source: Objaverse 1.0 / Sketchfab原生版本，岩画（Petroglyph）C12 哈特姆·阿尔·梅拉哈（Khatm Al Melaha），卡尔巴，沙迦。内容为一头叙利亚野驴（Syrian Wild Ass）。年代推测为新石器时代（Neolithic）或更早。[Fossati 2019 《来自往昔的讯息：哈杰尔山脉岩画（阿曼）》（Messages from the Past: Rock Art of the Al-Hajar Mountains (Oman)）] 哈特姆·阿尔·梅拉哈（Khatm Al Melaha）是位于阿联酋（UAE）沙迦卡尔巴附近阿曼海（Oman Sea）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。 本次共记录超过175块带有岩画的石块，识别出近400处岩画纹饰（motif）。每一块带有岩画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个精度为±1cm的GPS测点。 岩画的识别借助了MeshLab中的辐射缩放（Radiance Scaling）功能、Substance Painter的材质光照调节工具，以及Sketchfab的场景参数调整功能。部分岩刻在常规观测视角下完全不可见，仅当通过上述任一技术可识别出轮廓线条时，才会开展绘图记录工作。 实景建模（Reality Capture） 来源：Objaverse 1.0 / Sketchfab