There is provided a suturing toolkit comprising a suture thread comprising suture segments, a camera arranged for recording an image of the suture thread, and an image processor arranged for processing the recorded image and outputting a display image. First and second spectral signatures of different suture segments comprise distinct components in a non-visible wavelength range. The camera is arranged for recording a spectrally resolved image of the distinct components. The image processor is arranged for identifying first image parts in the recorded image that comprise the distinct components of the first spectral signature, identifying second image parts in the recorded image that comprise the distinct components of the second spectral signature, and selectively applying visible contrasting colors to the first and second image parts in the output display image.
