Method and system for determining moving speed of endoscope camera in gastrointestinal tract

A method for determining a moving speed of an endoscope camera in a gastrointestinal tract, to be implemented by a processor, the method comprising steps of:

• based on a plurality of training sets of gastrointestinal images captured by a camera module moving in an artificial gastrointestinal tract respectively at a plurality of preset moving speeds and the preset moving speeds, using a predetermined machine learning algorithm to obtain a preliminary model for determining a moving speed of the camera module, the training sets of gastrointestinal images being captured with a preset frame rate during a preset time period;
• feeding a plurality of preliminary validation sets of gastrointestinal images of a real gastrointestinal tract into the preliminary model to obtain a plurality of estimation results that respectively correspond to the preliminary validation sets of gastrointestinal images, each of the estimation results including at least one estimated speed that corresponds to a series of successive images included in the corresponding one of the preliminary validation sets of gastrointestinal images;
• based on the estimation results, selecting, from the preliminary validation sets of gastrointestinal images, at least one series of successive images corresponding to an estimated speed that is substantially equal to one of the preset moving speeds respectively as at least one selected validation set of gastrointestinal images;
• based on the at least one selected validation set of gastrointestinal images, tuning parameters of the preliminary model to result in a speed-determining model for determining a moving speed of an endoscope camera in a gastrointestinal tract;
• when receiving a target set of gastrointestinal images that are successively captured by the endoscope camera moving in a target gastrointestinal tract, using the speed-determining model to determine, based on the target set of gastrointestinal images, a moving speed of the endoscope camera in the target gastrointestinal tract;
• and
• outputting the moving speed of the endoscope camera thus determined.