Computer based object detection within a video or image
Described herein are software and systems for analyzing videos and/or images. Software and systems described herein are configured in different embodiments to carry out different types of analyses. For example, in some embodiments, software and systems described herein are configured to locate an object of interest within a video and/or image.
1. A computer-based method for identifying an object of interest or factor of interest within a video, the method comprising:
(a) inputting the video comprising a plurality of frames into a software module;
(b) generating a feature map from a frame of the plurality of frames with the software module, wherein the feature map comprises a probability of presence of the object of interest or factor of interest at a location within the frame; and
(c) analyzing the feature map using a statistical technique to obtain one or more probability distribution functions from the probability, thereby identifying the object of interest or factor of interest within the video.
2. The method of claim 1 , wherein the software module comprises a deep neural network.
3. The method of claim 2 , wherein the feature map comprises data from a hidden layer or an output layer of the deep neural network.
4. The method of claim 2 , wherein the deep neural network comprises at least one of VGG-19, ResNet, Inception, and MobileNet.
5. The method of claim 1 , wherein the factor of interest comprises at least one of a location of a pixel within the frame and an angle within the frame.
6. The method of claim 1 , wherein the statistical technique comprises Monte Carlo Sampling, and wherein the Monte Carlo sampling is used to generate sample locations of the object of interest within the feature map.
7. The method of claim 6 , wherein the statistical technique further comprises Bayesian modeling, and wherein the Bayesian modeling is used to model a change in a location of the object of interest within the frame to a different location of the object of interest within a different frame of the plurality of frames.
8. The method of claim 7 , comprising identifying a position of the object of interest within the frame relative to a different object of interest within the frame.
9. The method of claim 1 , wherein the factor of interest comprises an angle.
10. The method of claim 1 , wherein the object of interest comprises a joint of a body of an individual.
11. The method of claim 10 , wherein the joint comprises a shoulder, elbow, hip, knee, or ankle.
12. The method of claim 11 , wherein the video captures the individual within the frame.
13. The method of claim 12 , wherein the video captures a factor of interest from the frame to a different frame within the plurality of frames.
14. The method of claim 13 , wherein the factor of interest comprises a movement of a joint.
15. The method of claim 14 , wherein the movement of the joint is measured relative to a different joint of the body of the individual and is expressed as an angle.
16. The method of claim 15 , wherein the angle is used by a healthcare provider to evaluate the joint of the individual.
17. The method of claim 1 , wherein a Gaussian distributed heatmap is multiplied to the feature map in order to incorporate an assumption that the object of interest or factor of interest does not deviate largely between adjacent frames of the plurality of frame.
18. A computer-based system for identifying an object of interest or a factor of interest within a video, the system comprising:
(a) a processor;
(b) a non-transitory medium comprising a computer program configured to cause the processor to:
(i) input the video comprising a plurality of frames into a software module;
(ii) generate a feature map using the software module, wherein the feature map comprises a probability of presence of the object of interest or factor of interest at a location within the frame; and
(iii) analyze the feature map using a statistical technique to obtain one or more probability distribution functions from the probability, thereby identifying the object of interest or the factor of interest within the video.
19. The system of claim 18 , wherein the software module comprises a deep neural network.
20. The system of claim 19 , wherein the feature map comprises data from a hidden layer or an output layer of the deep neural network.
21. The system of claim 19 , wherein the deep neural network comprises at least one of VGG-19, ResNet, Inception, and MobileNet.
22. The system of claim 18 , wherein a Gaussian distributed heatmap is multiplied to the feature map in order to incorporate an assumption that the object of interest or factor of interest does not deviate largely between adjacent frames of the plurality of frame.