System and method for displaying motility events in an in vivo image stream
A system and method may analyse and display intestinal motility events, based on an image stream captured by an in vivo imaging device. According to some embodiments, the system includes a storage unit to store image frames from the image stream, a processor to select a strip of pixels from a plurality of image frames of the image stream and to align the selected strips adjacently to form a motility events bar, and a visual display unit for displaying the motility events bar to a user.
1. A computer-implemented method for display of intestinal motility events in an image stream captured by an in vivo imaging device, the method comprising:
receiving an image stream captured by the in vivo device, the image stream comprising image frames, each image frame comprising a plurality of image pixels;
detecting a predetermined feature in each image frame of at least a subset of the image stream;
selecting a strip of pixels from each image frame of the at least subset of the image stream, such that the strip of pixels passes through the detected feature in each image frame;
aligning the selected strips adjacently to form a motility events bar; and
displaying the motility events bar on a visual display unit.
2. The method of claim 1 wherein the strip of pixels comprises at least one line of pixels selected from an image frame.
3. The method of claim 2 wherein the strip of pixels is a straight line of pixels.
4. The method of claim 1 comprising determining a fixed point in each image frame which is included in the selected strip of pixels.
5. The method of claim 4 wherein the fixed point is the center of the image frame.
6. The method of claim 1 , wherein the predetermined feature is a lumen hole.
7. The method of claim 6 , wherein the strip of pixels is selected to pass through the center of the detected lumen hole.
8. The method of claim 6 , wherein the strip of pixels is selected such that the lumen length is maximized in the selected strip.
9. The method of claim 1 , comprising displaying a video display of the image stream alongside the motility events bar.
10. The method of claim 1 , comprising determining an intestinal event based on the motility events bar.
11. The method of claim 1 , wherein the intestinal event is selected from: contraction, static closed lumen, tunnel and turbid lumen.
12. The method of claim 1 , wherein the subset of image frames includes a sequence of consecutive image frames from the image stream.
13. A system for display of intestinal motility events in an image stream captured by an in vivo imaging device, comprising:
a storage unit to store a plurality of image frames from the image stream, each image frame comprising a plurality of image pixels arranged in an array;
a processor to:
detect a predetermined feature in each image frame of at least a subset of the plurality of image frames;
select a strip of pixels from each image frame of the at least subset of plurality of image frames, such that the strip of pixels passes through the detected feature in each image frame; and
align the selected strips adjacently to form a motility events bar; and
a visual display unit for displaying the motility events bar to a user.
14. The system of claim 13 wherein the strip of pixels comprises at least one line of pixels selected from an image frame.
15. The system of claim 14 wherein the strip of pixels is a straight line of pixels.
16. The system of claim 13 wherein the processor is to determine a fixed point in each image frame which is included in the selected strip of pixels.
17. The system of claim 16 wherein the fixed point is the center of the image frame.
18. The system of claim 13 , wherein the predetermined feature is a lumen hole.
19. The system of claim 13 , wherein the processor is to determine an intestinal event based on the motility events bar.
20. The system of claim 19 , wherein the intestinal event is selected from: contraction, static closed lumen, tunnel and turbid lumen.