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US 10,540,540 B2Granted
Method and device to determine landmark from region of interest of image
AssigneeSamsung Electronics Co., Ltd.
InventorsSeonmin Rhee, Jungbae Kim, Youngkyoo Hwang, Jaejoon Han
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Abstract
At least some example embodiments disclose a device and a method for determining a landmark of an image. The device may compare, to a key landmark set as a reference landmark, a first candidate landmark detected from a region of interest (ROI) of an input image and a second candidate landmark tracked from a previous frame, and determine a landmark similar to the key landmark to be a final landmark.
Claims14
A device for determining a landmark of an image, the device comprising:
- at least one processor configured to execute computer-readable instructions to,
- detect a first candidate landmark from a region of interest (ROI) of a current frame of an input image;
- track a second candidate landmark of the current frame from final landmark information of a previous frame of the input image;
- determine a key landmark based on the first candidate landmark and the second candidate landmark;
- and
- determine final landmark information of the current frame based on a level of similarity between a first histogram of a first local patch adjacent to the detected first candidate landmark and a second histogram of a second local patch adjacent to the key landmark and a level of similarity between a third histogram of a third local patch adjacent to the tracked second candidate landmark and the second histogram of the second local patch adjacent to the key landmark.
3 more elements
A method of determining a landmark of an image, the method comprising:
- detecting a first candidate landmark from a region of interest (ROI) of a current frame of an input image;
- tracking a second candidate landmark of the current frame from final landmark information of a previous frame of the input image;
- determining a key landmark based the first candidate landmark and the second candidate landmark;
- and
- determining final landmark information of the current frame based on a level of similarity between a first histogram of a first local patch adjacent to the first candidate landmark and a second histogram of a second local patch adjacent to the key landmark and a level of similarity between a third histogram of a third local patch adjacent to the second candidate landmark and the second histogram of the second local patch adjacent to the key landmark.
2 more elements
Dependencies are inferred from the claim text.