Petroglyph J16 Khatm Al Melaha, Kalba, Sharjah

Natural Version with Paint, Petroglyph J16 Khatm Al Melaha, Kalba, Sharjah. One wild ass, two oryx, sun and other symbols. Unusual deigns. 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带彩绘的J16号岩画（petroglyph），出自阿联酋沙迦卡尔巴的哈特姆·阿尔·梅拉哈（Khatm Al Melaha）遗址。画面包含一头野驴、两只长角羚、太阳及其他符号，纹饰风格独特，年代推测为新石器时代或更早。[引自Fossati 2019年《来自过去的讯息：哈杰尔山脉岩画（阿曼）》] 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。 该遗址已记录超过175块带有岩画的石块，共识别出近400个图像元素。每一块带有刻画纹饰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个精度达±1cm的GPS测点。 研究团队通过MeshLab中的亮度缩放（Radiance Scaling）功能、Substance Painter的材质光照调节，以及Sketchfab的场景条件调整来识别岩画。部分刻画纹饰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线条时，才会进行绘图记录。 Reality Capture与Substance Painter 数据集来源：Objaverse 1.0 / Sketchfab