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US 2013/0272575 A1Published application
Object detection using extended surf features
AssigneeIntel Corporation
InventorsJianguo Li, Yimin Zhang
Life of this patent
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Abstract
Systems, apparatus and methods are described including generating gradient images from an input image, where the gradient images include gradient images created using 2D filter kernels. Feature descriptors are then generated from the gradient images and object detection performed by applying the descriptors to a boosting cascade classifier that includes logistic regression base classifiers.
Claims23
-28. (canceled)
A computer-implemented method, comprising:
- receiving an input image;
- generating a plurality of gradient images of the input image, wherein the plurality of gradient images includes at least a first gradient image created using a two-dimensional filter kernel;
- generating feature descriptors of the input image in response to the plurality of gradient images;
- and
- performing object detection on the input image by applying a boosting cascade classifier to the feature descriptors, wherein the boosting cascade classifier includes a plurality of logistic regression base classifiers.
2 more elements
An article comprising a computer program product having stored therein instructions that, if executed, result in:
- receiving an input image;
- generating a plurality of gradient images of the input image, wherein the plurality of gradient images includes at least a first gradient image created using a two-dimensional filter kernel;
- generating feature descriptors of the input image in response to the plurality of gradient images;
- and
- performing object detection on the input image by applying a boosting cascade classifier to the feature descriptors, wherein the boosting cascade classifier includes a plurality of logistic regression base classifiers.
2 more elements
An apparatus, comprising:
- a processor configured to:
- receive an input image;
- generate a plurality of gradient images of the input image, wherein the plurality of gradient images includes at least a first gradient image created using a two-dimensional filter kernel;
- generate feature descriptors of the input image in response to the plurality of gradient images;
- and
- perform object detection on the input image by applying a boosting cascade classifier to the feature descriptors, wherein the boosting cascade classifier includes a plurality of logistic regression base classifiers.
3 more elements
A system comprising:
- an imaging device;
- and
- a computer system, wherein the computer system is communicatively coupled to the imaging device and wherein the computer system is to:
- receive an input image from the imaging device;
- generate a plurality of gradient images of the input image, wherein the plurality of gradient images includes at least a first gradient image created using a two-dimensional filter kernel;
- generate feature descriptors of the input image in response to the plurality of gradient images;
- and
- perform object detection on the input image by applying a boosting cascade classifier to the feature descriptors, wherein the boosting cascade classifier includes a plurality of logistic regression base classifiers.
5 more elements
Dependencies are inferred from the claim text.