System and method for detecting anomalies in a tissue imaged in-vivo

摘要

A system and method for detecting an anomaly in a tissue captured or imaged by an imaging system are provided. A uniform region in an image representing a tissue may be defined by identifying a group of pixels associated with a predefined variance from an imaging parameter value. An adaptive size window may be used to define a sub-region in a uniform region. An anomaly may be detected by identifying, in the sub-region, a set of pixels associated with imaging parameter values indicative of an anomaly. Other embodiments are described and claimed.

主权项

1. A method of detecting an anomaly in an image captured in vivo by an in-vivo imaging system, the method comprising:
segmenting an image captured in vivo into valid tissue zones for anomaly detection, and non-valid tissue zones excluded from anomaly detection, wherein each valid tissue zone is a portion of the image, wherein each pixel in the valid tissue zone has a pixel intensity value that is greater than a predetermined intensity reference value, and wherein each pixel in the valid tissue zone is associated with a respective set of imaging parameter values, the set of imaging parameter values having a deviation from a corresponding reference value no greater than a predefined deviation; identifying, in the valid tissue zones, individual pixels whose color characteristics deviate from reference color parameters representing normal tissue, and classifying said pixels as anomaly pixels; and analyzing each identified valid tissue zone by:
(i) identifying a group of the individual anomaly pixels in the valid tissue zone;(ii) if the group of anomaly pixels in the valid tissue zone satisfies predetermined anomaly criteria, determining that a region of the zone containing the group of anomaly pixels is an anomaly region; andrepeating steps (i) and (ii) for all anomaly pixels identified in the valid tissue zone.