APPARATUS OF NON-TOUCH OPTICAL DETECTION OF VITAL SIGNS OF REDUCED IMAGES FROM SPATIAL AND TEMPORAL FILTERS
A microprocessor is operably coupled to a camera from which patient vital signs are determined. A temporal variation of images from the camera is generated and amplified from which the patient vital sign, such as heart rate or respiratory rate, can be determined and displayed or stored.
1 . An apparatus of motion amplification to communicate biological vital signs, the apparatus comprising:
a cropper that is operable to receive at least two images and operable to crop the images to exclude a border area of the images, generating at least two cropped images;
a temporal-variation-amplifier of the at least two cropped images that is operable to generate a temporal variation;
a vital-sign generator that is operably coupled to the temporal-variation-amplifier that is operable to generate at least one vital sign from the temporal variation; and
a display device that is operably coupled to the vital-sign generator that is operable to display the at least one vital sign.
2 . The apparatus of claim 1 , wherein the temporal-variation-amplifier further comprises:
a skin-pixel-identifier that identifies pixel values that are representative of the skin in the at least two images; and
a first frequency filter that is operably coupled to the skin-pixel-identifier and that is applied to output of the skin-pixel-identifier.
3 . The apparatus of claim 2 , wherein the temporal-variation-amplifier further comprises:
a regional facial clusterial module that is operably coupled to the first frequency filter and that applies spatial clustering to the output of the first frequency filter; and
a second frequency filter that is operably regional facial clusterial module and that is applied to output of the regional facial clusterial module, generating the temporal variation.
4 . The apparatus of claim 2 , wherein the regional facial clusterial module further comprises:
a fuzzy clusterer.
5 . The apparatus of claim 2 , wherein the first frequency filter further comprises:
a one-dimensional spatial Fourier Transformation apparatus.
6 . The apparatus of claim 2 , wherein the first frequency filter further comprises:
a bandpass filter.
7 . The apparatus of claim 2 , wherein the first frequency filter further comprises:
a weighted bandpass filter.
8 . The apparatus of claim 2 , wherein the first frequency filter further comprises:
a Gaussian filter.
9 . The apparatus of claim 1 further comprising:
a storage device that is operably coupled to the vital-sign generator and that is operable to store the at least one vital sign in a volatile memory.
10 . The apparatus of claim 1 further comprising:
a storage device that is operably coupled to the vital-sign generator and that is operable to transmit the at least one vital sign to another apparatus.
11 . An apparatus of motion amplification to communicate biological vital signs, the apparatus comprising:
a cropper that is operable to receive at least two images and operable to crop the images to exclude a border area of the images, generating at least two cropped images;
a spatial bandpass filter that applies a frequency filter to at least two cropped images;
a regional facial clusterial module that is operably coupled to the spatial bandpass filter and that applies spatial clustering to output of the spatial bandpass filter;
a temporal bandpass filter that is operably coupled to the regional facial clusterial module and that is applied to output of the regional facial clusterial module;
a temporal-variation identifier that is operably coupled to the temporal bandpass filter and that identifies temporal variation of output of the temporal bandpass filter;
a vital-sign generator that is operably coupled to the temporal-variation identifier that generates at least one vital sign from the temporal variation; and
a display device that is operably coupled to the vital-sign generator that is operable to display the at least one vital sign.
12 . The apparatus of claim 11 , wherein the apparatus further comprises:
a skin-pixel-identifier that performs an automatic seed point based clustering process on the at least two images and transmits clustered output to the spatial bandpass filter.
13 . The apparatus of claim 11 , wherein the regional facial clusterial module further comprises:
a fuzzy clusterer.
14 . The apparatus of claim 11 , wherein the regional facial clusterial module further comprises:
a K-cluster.
15 . The apparatus of claim 11 , wherein the regional facial clusterial module further comprises:
an expectation-maximizer.
16 . The apparatus of claim 11 , wherein the regional facial clusterial module further comprises:
a seed point based clustering apparatus.
17 . The apparatus of claim 11 , wherein the regional facial clusterial module further comprises:
a Ward's based apparatus.
18 . The apparatus of claim 11 , wherein the spatial bandpass filter further comprises:
a one-dimensional spatial Fourier Transformation apparatus.
19 . The apparatus of claim 11 , wherein the spatial bandpass filter further comprises:
a high pass filter.
20 . The apparatus of claim 11 further comprising:
a storage device that is operably coupled to the vital-sign generator and that is operable to transmit the at least one vital sign to another apparatus.