Petroglyph V25 Khatm Al Melaha, Kalba, Sharjah

DStretch Version, Petroglyph G22 Khatm Al Melaha, Kalba, Sharjah. A single Syrian wild ass. 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 DStretch Source: Objaverse 1.0 / SketchfabDStretch 版本，岩画（Petroglyph）G22 哈特姆·阿尔·梅拉哈（Khatm Al Melaha），沙迦卡尔巴。单体叙利亚野驴形象，年代推测为新石器时代或更早。[引自 Fossati 2019《来自往昔的讯息：哈杰尔山脉（阿曼）岩画》] 哈特姆·阿尔·梅拉哈是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。 该遗址已记录逾175块带有岩画的石块，共辨识出近400个岩画母题。每一块带有纹饰的岩石均被分配唯一标识编号及GPS坐标。单日累计完成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个精度为±1厘米的GPS测点。 研究团队通过MeshLab中的辐射度缩放（Radiance Scaling）工具、Substance Painter的材质光照模拟功能，以及Sketchfab的环境条件调整功能来识别岩画。部分石刻在常规视角下完全不可见，仅当通过上述任一技术可辨识出纹饰线条时，才会进行绘图记录。 数据处理采用Reality Capture与DStretch两款工具。 数据来源：Objaverse 1.0 / Sketchfab