Patent ID: 11930995
Assignee: AMBU A/S
Field: Audio-visual technology (Electrical engineering)
Classification: CPC A  G  H | IPC A  G

Claim 21:
22. A medical visual aid system comprising:
an endoscope including an image capturing device and a light emitting device, the endoscope structured to generate an image data comprising a plurality of pixels representing an image, the plurality of pixels including pixels in a dark pixel area and pixels in a light pixel area, the pixels in the light pixel area being lighter than the pixels in the dark pixel area; and
an image signal processor adapted to be communicatively coupled with the endoscope, the image signal processor comprising processing instructions operable to receive the image data and apply a non-linear scaling model to the image data to form adjusted image data, the non-linear scaling model configured to apply different intensity gains to the pixels in the light pixel area than to the pixels in the dark pixel area,
wherein the dark pixel area includes pixels having intensities up to 25% of a maximum intensity and the light pixel area includes pixels having intensities equal to or greater than 95% of the maximum intensity, and wherein the intensity gains include a first intensity gain configured to brighten the pixels in the dark pixel area.