Petroglyph G5, Khatm Al Melaha, Kalba, Sharjah

DStretch Version, Petroglyph G5, Khatm Al Melaha, Kalba, Sharjah. One Ibex. 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 DStretch Source: Objaverse 1.0 / SketchfabDStretch版本、岩画（Petroglyph）G5、Khatm Al Melaha、卡尔巴（Kalba）、沙迦（Sharjah）。遗存一处岩羊（Ibex）形象刻纹，年代推测为新石器时代或更早。[引自Fossati 2019《来自过去的讯息：哈杰尔山脉（阿曼）岩画艺术》] Khatm Al Melaha是阿拉伯联合酋长国（UAE）沙迦卡尔巴附近阿曼海沿岸的考古遗址，亦是阿联酋境内规模最大的岩画遗址之一 本次共记录175余块带有岩画的石材，识别出近400个岩画纹样。每一块带有刻纹的岩石均被分配唯一标识编号与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个精度为±1cm的GPS测点 岩画识别借助MeshLab中的辐射缩放法（Radiance Scaling）、Substance Painter的材质光照功能，以及调整Sketchfab的显示参数完成。部分刻纹在常规视图下完全不可见，仅当通过上述任一技术可识别出刻纹线条时，才会进行绘图标注 Reality Capture DStretch 数据来源：Objaverse 1.0 / Sketchfab