Method and apparatus for an adaptive threshold based object detection
AssigneeXerox Corporation
InventorsYusuf O. Artan, Peter Paul
Life of this patent
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Abstract
A method, non-transitory computer readable medium, and apparatus for detecting an object in an image are disclosed. For example, the method receives the image, calculates a score for each one of a plurality of locations in the image, performs a box plot of the score of the each one of the plurality of locations of the image, identifies an outlier score that falls outside of the box plot, determines that a distance ratio of the outlier score is less than a predefined distance ratio and detects the object in a location of the plurality of locations of the image corresponding to the outlier score.
Claims18
A method for detecting an object in an image, comprising:
- receiving, by a processor, the image;
- calculating, by the processor, a score for each one of a plurality of locations in the image;
- performing, by the processor, a box plot of the score of the each one of the plurality of locations of the image;
- identifying, by the processor, an outlier score that falls outside of the box plot;
- determining, by the processor, that a distance ratio of the outlier score is less than a predefined distance ratio, wherein the distance ratio is a ratio that is based upon a comparison of a first distance of a second highest score and a second distance of the outlier score;
- and
- detecting, by the processor, the object in a location of the plurality of locations of the image corresponding to the outlier score.
A non-transitory computer-readable medium storing a plurality of instructions, which when executed by a processor, cause the processor to perform operations for detecting an object in an image, the operations comprising:
- receiving the image;
- calculating a score for each one of a plurality of locations in the image;
- performing a box plot of the score of the each one of the plurality of locations of the image;
- identifying an outlier score that falls outside of the box plot;
- determining that a distance ratio of the outlier score is less than a predefined distance ratio, wherein the distance ratio is a ratio that is based upon a comparison of a first distance of a second highest score and a second distance of the outlier score;
- and
- detecting the object in a location of the plurality of locations of the image corresponding to the outlier score.
A method for detecting an object in an image, comprising:
- analyzing, by a processor, a plurality of training images having a known object to calculate a predefined distance ratio;
- receiving, by the processor, the image, wherein the image is of a vehicle;
- calculating, by the processor, a score for each one of a plurality of locations in the image, wherein the scoring is performed in accordance with a function based upon one or more landmark points and a mixture of parts of the image;
- performing, by the processor, a box plot of the score of the each one of the plurality of locations of the image, the box plot comprising a lowest score, a 25th percentile, a median, a 75th percentile and a second highest score;
- identifying, by the processor, an outlier score that falls outside of the box plot;
- determining, by the processor, that a distance ratio of the outlier score is less than the predefined distance ratio;
- detecting, by the processor, the object in a location of the plurality of locations of the image corresponding to the outlier score, wherein the object is a person;
- and
- calculating, by the processor, a total number of objects in the image to determine if the vehicle is in violation of a total number of passengers requirement for a high occupancy vehicle lane.
Dependencies are inferred from the claim text.