Petroglyph H22, Khatm Al Melaha, Kalba, Sharjah

Natural Version, Petroglyph H22, Khatm Al Melaha, Kalba, Sharjah. One Arabian Oryx. 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 Source: Objaverse 1.0 / Sketchfab岩画（Petroglyph）标本H22，地处阿联酋沙迦卡尔巴区域的哈特姆·阿尔·梅拉哈（Khatm Al Melaha），纹饰为一只阿拉伯大羚羊（Arabian Oryx），年代推测为新石器时代或更早。[引自Fossati 2019年《来自往昔的讯息：哈杰尔山脉岩画（阿曼）》] 哈特姆·阿尔·梅拉哈（Khatm Al Melaha）是坐落于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，共辨识出近400个岩画母题。每一块带有刻痕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。 本次岩画辨识工作借助三类技术开展：在MeshLab中应用辐射缩放（Radiance Scaling）、在Substance Painter中调整材质光照，以及在Sketchfab中修改场景条件。部分刻痕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。 实景捕捉（Reality Capture） 数据来源：Objaverse 1.0 / Sketchfab