Petroglyph H5, Khatm Al Melaha, Kalba, Sharjah

Natural Version with Paint, Petroglyph H5, Khatm Al Melaha, Kalba, Sharjah. Line and dots. 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彩绘自然标本、H5号岩刻（Petroglyph），地处阿联酋沙迦州卡尔巴的哈特姆·阿尔·梅拉哈（Khatm Al Melaha）遗址。纹饰以线条与圆点构成，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（阿曼）的岩刻艺术》] 哈特姆·阿尔·梅拉哈是位于阿联酋沙迦州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刻艺术遗址之一。 本次研究共记录了175余块带有岩刻的石块，识别出近400处纹饰。每一块带有刻痕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个精度为±1厘米的GPS测点。 研究人员通过Meshlab中的Radiance Scaling功能、Substance Painter的材质光照模拟，以及Sketchfab的环境条件调整功能识别岩刻。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线条时，才会进行绘图记录。 采用Reality Capture与Substance Painter开展相关处理 数据来源：Objaverse 1.0 / Sketchfab