Petroglyph C20 Khatm Al Melaha, Kalba, Sharjah

Natural Version, Petroglyph C20 Khatm Al Melaha, Kalba, Sharjah. One poorly defined animal. 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，阿联酋沙迦州卡尔巴地区的Khatm Al Melaha（哈特姆·阿勒·梅拉哈）岩画C20点位。存有一处轮廓模糊的动物形象，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（阿曼）岩画》] 哈特姆·阿勒·梅拉哈（Khatm Al Melaha）是阿联酋（UAE）沙迦州卡尔巴附近阿曼海沿岸的考古遗址，也是阿联酋境内规模最大的岩画遗址之一。 本次研究共记录175余处带有岩画的石材，识别出近400个岩画纹样。每一处带有雕刻的岩石均被赋予唯一编号与GPS坐标。单日采集共计25455张地面拍摄照片、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。 本次岩画识别借助Meshlab中的Radiance Scaling（辐射缩放）功能、Substance Painter的材质光照效果，以及Sketchfab的环境调节工具完成。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线条时，方进行描绘记录。 实景建模（Reality Capture） 数据来源：Objaverse 1.0 / Sketchfab