Difference between Photographic Measurement and Grating Scanning System

different measurement methods have different definitions.

1. The measurement methods are different. Photographic measurement uses powerful image processing software to process the digital image, while raster scanning system adopts the principle of raster photography to scan the object quickly.

2. Different definitions. Photographic measurement is a science and technology that photographs the object under study, measures and interprets the obtained image, and obtains the geometric information and physical information of the object being photographed, while raster scanning system is a rectangular pattern collected and reconstructed in TV images.