Abstract: A system for tracking movable objects in a scene comprising a first overview unit arranged to capture a first overview of a first portion of a scene, and a second overview unit arranged to capture a second overview of a second portion of a scene, wherein the first portion and the second portion may be partly overlapping. The system further comprises a PTZ-camera to image selected objects in the first or second portion of the scene. The first and the second overview unit are configured to detect and locate moving objects in the scene, and to transmit positional data of said moving objects to a control unit that determines if two or more movable objects may be imaged using a single view of the PTZ-camera, and to send instructions to the PTZ-camera to image said two or more movable objects concurrently.

Abstract: A method of calibrating a pan, tilt, zoom (PTZ) camera with a fixed camera utilizing an overview image of a scene captured by the fixed camera, and an image of the scene captured by the PTZ camera when directed in a first direction. By matching features in the overview image and the PTZ camera image, a first calibration is carried out by correlating the first direction to matching features in the overview image. A mapping between the PTZ camera image and the overview image is defined based on the matching features. The mapping is used to map an object from the PTZ camera image to the overview image. Based on an appearance of the mapped object, a quality of the mapping is calculated. If the quality is not good enough, the PTZ camera is redirected to a second direction, and a further calibration is carried out by again.

Abstract: A method of calibrating a pan, tilt, zoom (PTZ) camera with a fixed camera utilizing an overview image of a scene captured by the fixed camera, and an image of the scene captured by the PTZ camera when directed in a first direction. By matching features in the overview image and the PTZ camera image, a first calibration is carried out by correlating the first direction to matching features in the overview image. A mapping between the PTZ camera image and the overview image is defined based on the matching features. The mapping is used to map an object from the PTZ camera image to the overview image. Based on an appearance of the mapped object, a quality of the mapping is calculated. If the quality is not good enough, the PTZ camera is redirected to a second direction, and a further calibration is carried out by again.

Abstract: A system for tracking movable objects in a scene comprising a first overview unit arranged to capture a first overview of a first portion of a scene, and a second overview unit arranged to capture a second overview of a second portion of a scene, wherein the first portion and the second portion may be partly overlapping. The system further comprises a PTZ-camera to image selected objects in the first or second portion of the scene. The first and the second overview unit are configured to detect and locate moving objects in the scene, and to transmit positional data of said moving objects to a control unit that determines if two or more movable objects may be imaged using a single view of the PTZ-camera, and to send instructions to the PTZ-camera to image said two or more movable objects concurrently.