The paper presents a spatial-frequency characteristics comparative analysis for obtaining a colour’s image several methods. The modern colour image matrix spatial-frequency characteristics photodetectors spatial-frequency characteristics are presented. Both unique and advanced matrix photodetectors of both multilayer type and standard systems with mosaic filters are being investigated. The author’s matrix photodetector input signal distortion estimation, where two-layer sensors are presented, is carried out. Spatial-frequency characteristics comparative analysis showed that three-matrix colour image systems provide the best spatial resolution and the highest spatial (contrast) sensitivity than mosaic-type photodetectors.

The paper presents a multi-layer digital camera matrix photodetectors modifications. Modifications are a matrix photodetectors two main types hybrid: spatial structure and multilayer. The matrix photodetectors issue current state with the registering images function in both the visible and IR range is considered in detail. Such well-known manufacturers photo matrices analysis is carried out. To obtain a multispectral image, it is proposed to introduce light-sensitive layers for the near and mid-IR ranges. The developed matrices patterns are presented that allow achieving a balance of each of the five channels (red, green, blue, near and mid-IR) so that the spectrum each selected range has the matrix surface equal share. A layers’ combination is also proposed that allows to apply them separately-a layer that will minimize the noise in this area and focus on the infrared region, and use the visible one as an auxiliary one. At the same time, to get a full-fledged image, you need to apply each pixel interpolation. The light-sensitive layers’ distribution principle in each pattern is described.