Publication Type:

Conference Paper


2008 IEEE Instrumentation and Measurement Technology Conference, IEEE (2008)



Accession Number:



Blood, Cameras, CCD camera, CCD image sensors, Contact-less, contactless imaging, Contacts, Dermal Perfusion, Dermis, image analysis, Infrared imaging, infrared region, Infrared spectra, Multi-spectral imaging, multispectral imaging, Non-Invasive, noninvasive method, Optical imaging, oxygenated blood absorption coefficient, photoplethysmograph, Photoplethysmography, skin, Wounds


Photoplethysmography (PPG) has come to be accepted as a common, non-invasive method for measuring the level of oxygen saturation in arterial blood. This paper describes a variation of the accepted PPG technique, to provide a contact-less and non-invasive method of characterizing dermal perfusion. It employs a 3-CCD, multi-spectral camera, to image the selected area. The acquired images are analysed by making use of the fact that the absorption co-efficient of oxygenated blood is more in the infra-red (IR) region of the spectrum, when compared to the red region. This fact is utilised to characterize the extent of dermal perfusion in the selected area of the skin.

Cite this Research Publication

Dr. Madhu Mohan N. and Kumar, V. J., “Contact-less, Multi-Spectral Imaging of Dermal Perfusion”, in 2008 IEEE Instrumentation and Measurement Technology Conference, 2008.