Checking device and method based on image processing
AssigneeStmicroelectronics (Grenoble2) SAS
InventorsFlorent Pellerin, Jacques Dumarest
Life of this patent
Estimating the term…
Abstract
A device for detecting objects includes a vessel intended to contain the objects. A sensor is configured to capture at least one image of the vessel. A processing device is configured to process at least one captured image by detecting objects of the at least one captured image, extracting characteristics of each detected object, and generating a list of the characteristics of each detected object. A memory stores the generated list, the memory also configured to store a first reference list of object characteristics. The processing device further generates a second list of characteristics from a captured image. The characteristics of each object of the second list are compared with, respectively, the characteristics of each object of the reference list.
Claims22
A device for detecting objects, comprising:
- a vessel configured to contain the objects to be detected and having a relief bottom;
- an imager configured to capture an image of the vessel;
- a vibration unit for displacing the objects contained in the vessel:,
- a wedging device for wedging the objects in said vessel;
- a processor configured to process said captured image so as to detect first objects in said at least one captured image, extract characteristics of each detected object of the first objects, and generate a list of the characteristics of each detected object of the first objects;
- a memory configured to store said generated list, the memory further configured to store a first reference list of object characteristics;
- and
- a sensor configured to detect replacement of the first objects in the vessel with second objects in the vessel such that the first objects are no longer in the vessel and to generate a trigger for the processor in response thereto;
- wherein said processor is further configured to, in response to the trigger:
- capture a new image of the vessel as containing the second objects and not the first objects,
- process the new image so as to detect the second objects and not the first objects in the new image, extract characteristics of each detected object of the second objects in the new image, and generate a second list of characteristics from the new image, and
- compare characteristics of each object from the second list with, respectively, the characteristics of each object from the first reference list to determine correspondence between the objects in the new image and the objects in the image.
A method for detecting objects contained in a vessel having a relief bottom, comprising:
- selectively displacing the objects contained in the vessel using a vibration unit;
- wedging the objects contained in the vessel using a wedging device;
- capturing at least one image of the vessel;
- and
- processing said at least one captured image;
- wherein processing comprises:
- detecting first objects of said at least one first image;
- extracting characteristics of each detected object;
- generating a list of the characteristics of each detected object;
- and
- storing said list of the characteristics;
- the method further comprising:
- storing a first reference list of object characteristics;
- sensing replacement of the first objects contained in the vessel with second objects such that the first objects are no longer in the vessel;
- capturing at least one new image of the vessel as containing the second objects and not the first objects in response to sensing of the replacement of the first objects with the second objects;
- processing said new captured image so as to detect the second objects and not the first objects in the at least one new image and generate a second list of characteristics of each detected object of the second objects;
- and
- comparing the characteristics of each object of the second list with, respectively, the characteristics of each object of the first reference list.
Dependencies are inferred from the claim text.