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OwnerEric P. Krotkov, Yongping Wang +2inventors
InventorsEric P. Krotkov, Yongping Wang, Zhang Zhong, Robert M. Danen
Estimating the term…
A system, method and computer program product is provided for screening and analyzing spectral images of a microcirculatory system to measure blood characteristics, such as hemoglobin concentration. In an embodiment, multi-stage screening is performed on each input image to determine whether the image is suitable for hemoglobin measurement and prediction. During the screening process the following quantities are measured: image intensity, image background intensity variation, image focus condition, image motion blur condition, number of vessels in the image with certain range of diameters, average vessel edge contrast, number of bubble segments in the image and the similarity between two images. The multi-stage screening cycle includes intensity screening, DWT decomposition, focus measurement, motion blur measurement, vessel and bubble detection, and repetition detection. During the screening stages, the image is classified into one of three categories: excellent, mediocre and poor. Only the images with an excellent rating is used for further Hb estimation. But both excellent and mediocre images would launch an autofocusing process provided by focus measurement. In another embodiment, a Fast Fourier transform is used to develop a spectral ratio to detect excellent images. The present invention provides real time hemoglobin prediction on the subject under investigation.
A method for screening images of visualizable components in a fluid flowing in a vascular system, the walls of which are substantially transparent to transmitted and reflected light, using a light transmitting device that is capable of transmitting light through the walls of a region of the vascular system into a sub-surface region thereof, an image capturing device capable of capturing images reflected from the sub-surface region of the vascular system illuminated by the light transmitting device to create a spectral image, and a processing unit in communication with the image capturing device, comprising the steps of:
For use with a light transmitting device for transmitting light through a vascular system, and an image capturing device for capturing images from the vascular system illuminated by the light transmitting device to create a spectral image, a processing unit adapted for communication with the image capturing device for analyzing at least one visualizable component in a fluid flowing in the vascular system, the walls of which are substantially transparent to transmitted and reflected light, comprising:
A computer program product comprising a computer useable medium having computer readable program code means embedded in said medium for causing an application program to execute on a computer that analyzes visualizable components in a fluid flowing in a vascular system, the walls of which are substantially transparent to transmitted and reflected light, using a light transmitting device that is capable of transmitting light through the vascular system, and an image capturing device capable of capturing images from the vascular system illuminated by the light transmitting device to create a spectral image, comprising:
Dependencies are inferred from the claim text.