Portable remote hyperspectral imaging for in situ examination of wall paintings

记录高分辨率光谱图像和对石窟遗址、坟墓和建筑物壁画进行无创监测尤为重要，因为这些壁画非常脆弱。一些地点的偏远，一些画作难以到达的高度，以及难以控制它们所处的环境，都导致了它们的脆弱性。目前，高分辨率的壁画成像需要脚手架或一些笨重的机械结构来将摄像机提升到墙壁或天花板的上部。该项目的目的是开发一种轻便灵活的便携式成像系统，用于可见光/近红外（400-1000nm）和短波红外（900nm-1700nm）的原位高分辨率，准确的彩色和光谱成像，包括从地面对壁画和其他大型画作进行荧光成像。该系统将提供非侵入性监测画作状况的手段，揭示过去的干预，研究绘画技巧和识别颜料，并向公众传播3D彩色图像。该系统的便携性意味着它可以被带到偏远的地点，在原地对绘画进行成像，而不需要脚手架或其他笨重的机械结构，它也可以用于对大型博物馆绘画和高分辨率的绘画对象进行成像。

The recording of high resolution spectral images and non-invasive monitoring of wall paintings in grotto sites, tombs and buildings are particularly important since these paintings are extremely vulnerable. The remoteness of some of the sites, the inaccessible height of some of the paintings and the difficulty in controlling the environment they are in, all contribute to their vulnerability. Imaging of wall paintings at high resolution currently requires either scaffolding or some heavy and cumbersome mechanical structure to lift the camera to the upper parts of a wall or ceiling. The aim of the proposed project is to develop a portable imaging system that is light-weight and flexible for in situ high resolution, accurate colour and spectral imaging in the visible/near infrared (400-1000nm) and short-wave infrared (900nm-1700nm), including fluorescence imaging of wall paintings and other large paintings from ground level. The system would provide the means of non-invasive monitoring of the conditions of the paintings, revealing past intervention, studying painting techniques and identifying pigments and disseminating the 3D colour images to the general public. The portability of the system means that it can be taken to remote sites to image paintings in situ without the need for scaffolding or other cumbersome mechanical structures and that it can also be used to image large museum paintings and painted objects in situ at high resolution.