Petroglyph G17, Khatm Al Melaha, Kalba, Sharjah

Natural Version, Petroglyph G17, Khatm Al Melaha, Kalba, Sharjah. Syrian Wild Ass and two other carvings. 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，岩画（petroglyph）G17，哈特姆阿勒梅拉哈（Khatm Al Melaha），卡尔巴，沙迦。该岩画主体为叙利亚野驴，另有两处伴生岩刻，年代推测为新石器时代或更早。[引自Fossati 2019《来自往昔的讯息：哈杰尔山脉（阿曼）岩画》] 哈特姆阿勒梅拉哈（Khatm Al Melaha）是阿联酋沙迦卡尔巴附近阿曼海沿岸的考古遗址，同时也是阿联酋境内规模最大的岩画遗址之一。 该遗址已记录175余块带有岩画的石材，识别出近400个岩画母题。每一块带有岩刻的岩石均被赋予唯一编号与GPS坐标。单日共完成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。 研究团队通过在Meshlab中应用辐射缩放（Radiance Scaling）、在Substance Painter中调整材质光照，以及在Sketchfab中修改渲染条件来识别岩画。部分岩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，才会进行绘图记录。 实景建模（Reality Capture） 数据源：Objaverse 1.0 / Sketchfab