FOERFARANDE OCH ANORDNING FOER PRODUCERING AV EN FELFAERGSBILD

The invention concerns a procedure and means for forming a wrong colour picture, in said procedure being utilized a video camera comprising advantageously a plurality of semiconductor detectors, having a sensitivity range in respect of wavelength extending into the near infra-red range. The invention is characterized in that before the semiconducto detector array (2) of the camera is placed a high-pass filter (4) cutting off blue light so that only near infra-red radiation has access to the blue light detectors (N'), both near infra-red radiation and green light have access to the green light detectors (G') and both near infra-red radiation and red light have access to the red light detectors (R'), whereby from the outputs (B, G, R) of the camera (1) or equivalent are obtained signals (ir, ir + g, ir + r) representing the respective combinations of radiation.