Abstract: A method is provided for calibrating a stereo imaging system by using at least one camera and a planar mirror. The method involves obtaining at least two images with the camera, each of the images being captured from a different camera position and containing the mirror view of the camera and a mirror view of an object, thereby obtaining multiple views of the object. The method further involves finding the center of the picture of the camera in each of the images, obtaining a relative focal length of the camera, determining an aspect ratio in each of the images, determining the mirror plane equation in the coordinate system of the camera, defining an up-vector in the mirror's plane, selecting a reference point in the mirror's plane, determining the coordinate transformation from the coordinate system of the image capturing camera into the mirror coordinate system, and determining a coordinate transformation.

Abstract: Production of calibrated stereo images and more particularly methods of producing calibrated stereo images by using a planar mirror and computer program products to carry out the methods. By using mirrored view(s) of at least one camera with multiple (different) mirrored views of an object in one or more captured images, the 3D coordinates of a point in real space with respect to the mirror's coordinate system can be easily determined even if the mirror's coordinate system is not known in advance. Additionally, the real distance between two selected spatial points appearing in one or more captured images can be determined on the basis of their corresponding image points. The invention includes the steps of finding a reference coordinate system by using the captured images, and then determining the transformations between the reference coordinate system and the camera coordinate system, as described in greater detail herein.

Abstract: A method is provided for calibrating a stereo imaging system by using at least one camera and a planar mirror. The method involves obtaining at least two images with the camera, each of the images being captured from a different camera position and containing the mirror view of the camera and a mirror view of an object, thereby obtaining multiple views of the object. The method further involves finding the center of the picture of the camera in each of the images, obtaining a relative focal length of the camera, determining an aspect ratio in each of the images, determining the mirror plane equation in the coordinate system of the camera, defining an up-vector in the mirror's plane, selecting a reference point in the mirror's plane, determining the coordinate transformation from the coordinate system of the image capturing camera into the mirror coordinate system, and determining a coordinate transformation.

Abstract: A method is provided for calibrating a stereo imaging system by using at least one camera and a planar mirror. The method involves obtaining at least two images with the camera, each of the images being captured from a different camera position and containing the mirror view of the camera and a mirror view of an object, thereby obtaining multiple views of the object. The method further involves finding the center of the picture of the camera in each of the images, obtaining a relative focal length of the camera, determining an aspect ratio in each of the images, determining the mirror plane equation in the coordinate system of the camera, defining an up-vector in the mirror's plane, selecting a reference point in the mirror's plane, determining the coordinate transformation from the coordinate system of the image capturing camera into the mirror coordinate system, and determining a coordinate transformation.

Abstract: Production of calibrated stereo images and more particularly methods of producing calibrated stereo images by using a planar mirror and computer program products to carry out the methods. By using mirrored view(s) of at least one camera with multiple (different) mirrored views of an object in one or more captured images, the 3D coordinates of a point in real space with respect to the mirror's coordinate system can be easily determined even if the mirror's coordinate system is not known in advance. Additionally, the real distance between two selected spatial points appearing in one or more captured images can be determined on the basis of their corresponding image points. The invention includes the steps of finding a reference coordinate system by using the captured images, and then determining the transformations between the reference coordinate system and the camera coordinate system, as described in greater detail herein.

Abstract: A method is provided for calibrating a stereo imaging system by using at least one camera and a planar mirror. The method involves obtaining at least two images with the camera, each of the images being captured from a different camera position and containing the mirror view of the camera and a mirror view of an object, thereby obtaining multiple views of the object. The method further involves finding the center of the picture of the camera in each of the images, obtaining a relative focal length of the camera, determining an aspect ratio in each of the images, determining the mirror plane equation in the coordinate system of the camera, defining an up-vector in the mirror's plane, selecting a reference point in the mirror's plane, determining the coordinate transformation from the coordinate system of the image capturing camera into the mirror coordinate system, and determining a coordinate transformation.

Abstract: A method and a multi-camera portable device for producing stereo images. The device has at least two image sensors, at least one of which is arranged on a first face of the portable device and a second one of which is arranged on a second face of the portable device opposite to the first face thereof. The method involves substantially simultaneously recording a first image containing a picture of an object and a second image containing a picture of a mirrored view of the object, obtaining the direction and the length of a mirroring vector from the distance ratio of a first distance in reality and a corresponding second distance in the second image, obtaining a capturing focal length of the second image sensor, and transforming the coordinate system of the first image sensor into the coordinate system of the virtual second image sensor to generate a stereo image pair.

Abstract: A method and a multi-camera portable device for producing stereo images. The device has at least two image sensors, at least one of which is arranged on a first face of the portable device and a second one of which is arranged on a second face of the portable device opposite to the first face thereof. The method involves substantially simultaneously recording a first image containing a picture of an object and a second image containing a picture of a mirrored view of the object, obtaining the direction and the length of a mirroring vector from the distance ratio of a first distance in reality and a corresponding second distance in the second image, obtaining a capturing focal length of the second image sensor, and transforming the coordinate system of the first image sensor into the coordinate system of the virtual second image sensor to generate a stereo image pair.

Abstract: A method and a multi-camera portable device for producing stereo images. The device has at least two image sensors, at least one of which is arranged on a first face of the portable device and a second one of which is arranged on a second face of the portable device opposite to the first face thereof. The method involves substantially simultaneously recording a first image containing a picture of an object and a second image containing a picture of a mirrored view of the object, obtaining the direction and the length of a mirroring vector from the distance ratio of a first distance in reality and a corresponding second distance in the second image, obtaining a capturing focal length of the second image sensor, and transforming the coordinate system of the first image sensor into the coordinate system of the virtual second image sensor to generate a stereo image pair.