Fluorescence Image Superimposition for Endoscope Gradation

The patent divides the image information into two separate layers: the fluorescence image showing the light output portion location, and the ordinary image preserving the gradation information. By segmenting the display content into distinct layers that can be selectively overlaid, the system maintains both location accuracy and gradation visibility without mixing them into a single合成 image.

The patent transitions from two-dimensional image combination to three-dimensional spatial arrangement by displaying the fluorescence image and ordinary image at different depth positions on the display screen. This dimensional separation allows users to perceive both the location of light output portions and the gradation information simultaneously without information loss.

The patent creates a visual copy of the background region by extracting and displaying the ordinary image portion corresponding to the background area alongside the fluorescence image. This copying approach eliminates the need for additional optical filters and light sources, as the background information is reproduced through image processing rather than physical optical components.

The patent makes the existing imaging system multi-functional by using the same illumination light source and optical path for both fluorescence imaging and ordinary image capture. The single light source serves dual purposes: exciting fluorescence while also providing illumination for the ordinary image, thereby eliminating the need for separate background illumination components.