Fast interactive registration tool for reproducible multi-spectral imaging for wound healing and treatment evaluation

Herke Jan Noordmans; Rowland de Roode; Rudolf Verdaasdonk

doi:10.1117/12.698874

20 February 2007 Fast interactive registration tool for reproducible multi-spectral imaging for wound healing and treatment evaluation

Herke Jan Noordmans, Rowland de Roode, Rudolf Verdaasdonk

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Proceedings Volume 6431, Multimodal Biomedical Imaging II; 64310O (2007) https://doi.org/10.1117/12.698874
Event: SPIE BiOS, 2007, San Jose, California, United States

Abstract

Multi-spectral images of human tissue taken in-vivo often contain image alignment problems as patients have difficulty in retaining their posture during the acquisition time of 20 seconds. Previously, it has been attempted to correct motion errors with image registration software developed for MR or CT data but these algorithms have been proven to be too slow and erroneous for practical use with multi-spectral images. A new software package has been developed which allows the user to play a decisive role in the registration process as the user can monitor the progress of the registration continuously and force it in the right direction when it starts to fail. The software efficiently exploits videocard hardware to gain speed and to provide a perfect subvoxel correspondence between registration field and display. An 8 bit graphic card was used to efficiently register and resample 12 bit images using the hardware interpolation modes present on the graphic card. To show the feasibility of this new registration process, the software was applied in clinical practice evaluating the dosimetry for psoriasis and KTP laser treatment. The microscopic differences between images of normal skin and skin exposed to UV light proved that an affine registration step including zooming and slanting is critical for a subsequent elastic match to have success. The combination of user interactive registration software with optimal addressing the potentials of PC video card hardware greatly improves the speed of multi spectral image registration.

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Herke Jan Noordmans, Rowland de Roode, and Rudolf Verdaasdonk "Fast interactive registration tool for reproducible multi-spectral imaging for wound healing and treatment evaluation", Proc. SPIE 6431, Multimodal Biomedical Imaging II, 64310O (20 February 2007); https://doi.org/10.1117/12.698874

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KEYWORDS

Image registration

Skin

Image processing

Ultraviolet radiation

Laser therapeutics

Software development

Visualization

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