CaptureCat is a browser-based tool for surveying applications based on oblique images.
Prerequisites for using CaptureCat are a browser, an installed web server and aerial photos from a combined vertical and oblique flight.
Using CaptureCat (see figure), complex surveying tasks can be solved in a browser-based software. Such tasks are typically performed by surveyors in the field or by stereoscopic measurements using specialized photogrammetric software and hardware in the office.
The four oblique views and the vertical view of the aerial photographs are visualized synchronously in the browser. By simply clicking on the object point, photogrammetric measurements are possible in the vertical and oblique images. This is done by identifying an object point in two or more images and blending the resulting lines of sight. Therefore, no photogrammetric expertise or ability to measure stereoscopically is required to carry out measurements on the computer.
In the current version of CaptureCat, points can be measured and lines and polygons can be created from them. There are two parameters for each measured point that describe how precisely the measurement was carried out. Similar to graphics software, these points can be combined into a layer and displayed in a desired color. Auxiliary lines can be created to reach blind rooms and building heights, for example, can be determined on-the-fly using these auxiliary lines. Various user-friendly tools (zoom, synchronous centering, duplicate windows, shortcuts, etc.) enable you to work efficiently. The measured objects can then be exported and further processed in commercially available software.