A surgical system comprising: an endoscope (901,1101), the endoscope comprising a stereoscopic optical channel for transporting light from tissue; a capture unit (120E,120F) coupled to receive light from the stereoscopic optical channel, the capture unit being configured to capture: at a first time (t), a first pair of images from the light, and at a second time (t+1) different from the first time, a second pair of images from the light characterized in that: the first pair of images comprises a combined image, the combined image including a combination of a fluorescence image and a first visible image, and the second pair of images being a second visible image and no fluorescence image; an image processing system (130E, 130F) coupled to the capture unit, the image processing system being configured to generate a pair of artificial fluorescence images for the time when the second visible image was captured by subtracting the first pair of images from the second pair of images, and being configured to compensate for any motion between the capture of the first pair of images and the second pair of images; and a stereoscopic display system (140E, 140F) coupled to the image processing system, the stereoscopic display system being configured to output an augmented stereoscopic image of at least a portion of the tissue, the augmented stereoscopic image comprising a first stereoscopic image including the pair of visible images and the pair of fluorescence images at the first time (t) and a second stereoscopic image including the pair of visible images and the pair of artificial fluorescence images at the second time (t+1). an endoscope (901,1101), the endoscope comprising a stereoscopic optical channel for transporting light from tissue; a capture unit (120E,120F) coupled to receive light from the stereoscopic optical channel, the capture unit being configured to capture: at a first time (t), a first pair of images from the light, and at a second time (t+1) different from the first time, a second pair of images from the light characterized in that: the first pair of images comprises a combined image, the combined image including a combination of a fluorescence image and a first visible image, and the second pair of images being a second visible image and no fluorescence image; at a first time (t), a first pair of images from the light, and at a second time (t+1) different from the first time, a second pair of images from the light characterized in that: the first pair of images comprises a combined image, the combined image including a combination of a fluorescence image and a first visible image, and the second pair of images being a second visible image and no fluorescence image; the first pair of images comprises a combined image, the combined image including a combination of a fluorescence image and a first visible image, and the second pair of images being a second visible image and no fluorescence image; an image processing system (130E, 130F) coupled to the capture unit, the image processing system being configured to generate a pair of artificial fluorescence images for the time when the second visible image was captured by subtracting the first pair of images from the second pair of images, and being configured to compensate for any motion between the capture of the first pair of images and the second pair of images; and a stereoscopic display system (140E, 140F) coupled to the image processing system, the stereoscopic display system being configured to output an augmented stereoscopic image of at least a portion of the tissue, the augmented stereoscopic image comprising a first stereoscopic image including the pair of visible images and the pair of fluorescence images at the first time (t) and a second stereoscopic image including the pair of visible images and the pair of artificial fluorescence images at the second time (t+1).