Petroglyph C16 Khatm Al Melaha, Kalba, Sharjah

Natural Version with Paint, Petroglyph C16 Khatm Al Melaha, Kalba, Sharjah. Male, female, and juvinile Syrian Wild Asses. 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彩绘自然标本，岩刻C16，采自阿联酋沙迦卡尔巴的哈特姆·阿尔·梅拉哈（Khatm Al Melaha）。内容包含雄性、雌性及幼年叙利亚野驴，年代推测为新石器时代或更早。[Fossati 2019 《来自过去的讯息：哈杰尔山脉（阿曼）岩画》] 哈特姆·阿尔·梅拉哈是阿联酋沙迦卡尔巴附近阿曼海沿岸的一处考古遗址，同时也是阿联酋境内规模最大的岩画遗址之一。 目前已记录超过175块带有岩刻的石块，辨识出近400个岩刻纹样。每一块带有刻纹的岩石均被赋予唯一标识编号与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测点。 研究人员通过在Meshlab中应用辐射缩放（Radiance Scaling）技术、在Substance Painter中调节材质光照，以及在Sketchfab中调整场景参数来辨识岩刻纹样。部分刻纹在常规视角下完全不可见，仅当通过上述任一技术可明确辨识刻线时，才会开展绘图记录工作。 Reality Capture与Substance Painter 数据来源：Objaverse 1.0 / Sketchfab