US 2018/0122099 A1 · IMAGE PROCESSING APPARATUS HAVING AUTOMATIC COMPENSATION FUNCTION FOR IMAGE OBTAINED FROM CAMERA, AND METHOD THEREOF

Abstract

The present invention relates to an image processing apparatus having an automatic compensation function for an image obtained from a camera, and a method thereof, and provides an image processing apparatus having an automatic compensation function for an image obtained from a camera, the apparatus comprising: an automatic compensation pattern of which one or more can be provided in an arbitrary place near a camera; an input/output module which receives an image as an input from the camera and transmits the same to the image processing apparatus; and an image processing module which is a processing unit containing an algorithm for compensating for distortion of the image obtained from the camera, wherein the input/output module comprises an image input/output unit for transmitting/receiving data in between the camera and the image processing module, and a storage unit for storing information processed by the image processing module, and the image processing module comprises a distortion compensation unit, an image alignment estimation unit, and an image alignment generation unit, the distortion compensation unit extracting, from the received image, characteristic points of the automatic compensation pattern, estimating the absolute location and installation angle of the camera by using the information based on the extracted characteristic points, and performing lens distortion compensation by using an inner parameter stored in the storage unit, the image alignment estimation unit estimating, in the image, the camera installation location and rotational error as a change parameter by using information on the absolute location and installation angle of the camera estimated in the distortion compensation unit, and the image alignment generation unit compensating for the three-dimensional location and size of the image by using the change parameter estimated in the image alignment estimation unit.

Claims12

Dependent claims

An image processing apparatus having an automatic correction function for an image obtained by a camera, the automatic correction function by which, when the camera transmits, to an input and output module of the image processing apparatus, an image obtained by capturing an automatic correction pattern installed on the ground, an image processing module of the image processing apparatus receives the image and corrects a distortion in the image, the image processing apparatus comprising:

at least one automatic correction pattern installed at a location around a camera;
an input and output module configured to receive an image from the camera and transmit the image to the image processing apparatus;
and
an image processing module, which is a processor including an algorithm to correct a distortion in the image obtained from the camera,
wherein the input and output module comprises:
an image inputter and outputter being between the camera and the image processing module to receive and transmit data;
and
a storage in which information processed by the image processing module is stored, and
the image processing module comprises:
a distortion corrector configured to extract feature points of the automatic correction pattern from the received image, estimate an absolute location and an installation angle of the camera using known information associated with the extracted feature points, and correct a lens distortion using an intrinsic parameter stored in the storage;
an image alignment estimator configured to estimate, as a change parameter, an installation location and a rotation error of the camera from the image using information associated with the absolute location and the installation angle estimated by the distortion corrector;
and
an image alignment generator configured to correct a three-dimensional (3D) position and a size of the image using the change parameter estimated by the image alignment estimator.

10 more elements

An image processing method having an automatic correction function for an image obtained by a camera, the image processing method comprising:

receiving, by an image processing module from an input and output module, an image of an automatic correction pattern captured by a camera;
extracting, by a distortion corrector of the image processing module, feature points of the automatic correction pattern from the received image using known information associated with the automatic correction pattern;
estimating an absolute location and an installation angle of the camera at a point in time at which the camera obtains the image, using the feature points of the automatic correction pattern extracted by the distortion corrector;
obtaining, by the distortion corrector, an intrinsic parameter to correct a lens distortion using the received image;
correcting the lens distortion in the image through a distortion correction algorithm using the obtained intrinsic parameter;
and
estimating, by an image alignment estimator, a change parameter and correcting, by an image alignment generator, the image using the estimated change parameter.

4 more elements

Dependencies are inferred from the claim text.

Image processing apparatus having automatic compensation function for image obtained from camera, and method thereof

Life of this patent

Image processing apparatus having automatic compensation function for image obtained from camera, and method thereof

Life of this patent

Abstract

Claims12