Petroglyph V29 Khatm Al Melaha, Kalba, Sharjah

Natural Version with Paint, Petroglyph V29 Khatm Al Melaha, Kalba, Sharjah. One Syrian Wild Ass and one human male. 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彩绘自然版本，阿联酋沙迦市卡尔巴地区哈塔姆·阿尔·梅拉哈（Khatm Al Melaha）岩画V29。画面包含一只叙利亚野驴与一名男性人类，年代大概率为新石器时代或更早。[引自Fossati 2019年《来自过去的讯息：哈杰尔山脉（阿曼）的岩石艺术》] 哈塔姆·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，也是阿联酋境内规模最大的岩石艺术遗址之一。 本次共记录175余块带有岩画（petroglyph）的石材，识别出近400处纹饰（motif）。每一块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张地面拍摄照片、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±1厘米的GPS测量点位。 本次岩画的识别工作借助了网格实验室（MeshLab）中的亮度缩放（Radiance Scaling）工具、Substance Painter的材质光照功能，以及Sketchfab的场景条件调整功能。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，才会进行描记。 实景建模（Reality Capture）与Substance Painter 数据集来源：Objaverse 1.0 / Sketchfab