Petroglyph N9 Khatm Al Melaha, Kalba, Sharjah

Natural Version with paint, Petroglyph N9 Khatm Al Melaha, Sharjah. One large Ibex, two wild ass, one loop, and an indisticnt figure. 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：沙迦哈塔姆·阿尔·梅拉哈N9号岩画（Petroglyph）。画面包含1只大型羱羊（Ibex）、2只野驴、1个环形图案以及1处模糊不清的形象，年代暂定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）岩画艺术》]。 哈塔姆·阿尔·梅拉哈是阿联酋沙迦地区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。 该遗址已记录超过175块带有岩画的石块，识别出近400处纹饰。每一块带有岩刻的岩石均被赋予唯一编号与GPS坐标。本次数据采集单日累计完成25455张地面实拍照片、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。 本次岩画识别借助MeshLab中的辐射缩放（Radiance Scaling）工具、Substance Painter的材质光照功能，以及Sketchfab的场景调节功能完成。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，才会进行绘图记录。 数据处理软件：Reality Capture与Substance Painter 数据来源：Objaverse 1.0 / Sketchfab