Petroglyph H27, Khatm Al Melaha, Kalba, Sharjah

Natural Version with Paint, Petroglyph H27, Khatm Al Melaha, Kalba, Sharjah. Unusual anthropomorphc 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带彩绘的岩画（petroglyph）H27，坐落于阿联酋沙迦省卡尔巴的哈特姆·阿勒梅拉哈（Khatm Al Melaha）遗址。该遗存为罕见拟人形象，年代推测属于新石器时代或更早。[引自Fossati 2019《来自过去的讯息：哈杰尔山脉（阿曼）的岩画艺术》] 哈特姆·阿勒梅拉哈（Khatm Al Melaha）是阿联酋沙迦省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艺术遗址之一。 该遗址已记录175余块带有岩画的石材，共识别出近400个岩画纹样。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±1厘米的GPS测点。 研究团队通过Meshlab中的辐射度缩放（Radiance Scaling）、Substance Painter的材质光照模拟，以及Sketchfab的场景参数调整来识别岩画。部分岩刻在常规视角下完全不可见，仅当通过上述技术可辨识出轮廓线条时，才会进行绘图记录。 建模流程采用Reality Capture与Substance Painter 数据来源：Objaverse 1.0 / Sketchfab