Petroglyph V13 Khatm Al Melaha, Kalba, Sharjah

Natural Version, Petroglyph V13 Khatm Al Melaha, Kalba, Sharjah. Unknown animal, symbol, or motif. 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自然版本，岩画（Petroglyph）V13 哈特姆·阿尔·梅拉哈（Khatm Al Melaha），卡尔巴（Kalba），沙迦（Sharjah）。该遗存为未知动物、符号或图案，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）岩画艺术》（Messages from the Past: Rock Art of the Al-Hajar Mountains (Oman)）] 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，同时也是阿联酋境内规模最大的岩画遗址之一。 该遗址已完成记录的带岩画石块超过175块，共识别出近400个图案。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获取25455张地面实拍照片、5244张无人机航拍照片、44段无人机航拍视频，以及182个定位误差不超过1厘米的GPS测点。 研究人员借助Meshlab中的辐射度缩放（Radiance Scaling）工具、Substance Painter中的材质光照调节功能，以及Sketchfab平台的环境条件调整功能识别岩画。部分岩刻在常规视角下完全不可见，仅当通过上述任一技术可识别出刻痕线条时，才会进行绘图记录。 实景建模（Reality Capture） 数据来源：Objaverse 1.0 / Sketchfab