Abstract: The present invention relates to utilization of metadata associated with a printed image. Portions of images and metadata are stored, each of the metadata being associated with a portion of the images. Imaging means are used to read a portion of the printed image. Correspondence between the read portion and the stored portions is determined. Metadata associated with a stored portion is retrieved in response to the determined correspondence between the read portion and the stored portion in question exceeding a predetermined threshold value. Further, the retrieved metadata or additional data indicated by it is retrieved.

Abstract: The invention relates to a camera system and to a display device for displaying images recorded by the camera system. The camera system comprises a camera (1) provided with an optics system (2) and a photosensitive image surface (3) disposed near the optics symmetrically relative to its optic axis, the image refracted by the optics being projected onto said image surface. The photosensitive image surface is a concave spherical surface whose center of curvature is at the focal point of the optics.

Abstract: The invention relates to a system and a procedure for image processing. The system comprises a data communication network (1) which serves as a channel for the transmission of the image being processed, digitized in an electronic form of representation, and an image processing device (2; 2a, 2b, 2c), which is connected to the data communication network (1) and which processes the image to enhance its visual quality to print the image to different formats. According to the invention, the image processing system comprises a classifying device (3), which automatically classifies the image, and a correcting device (4), which automatically corrects the image.

Abstract: The present invention relates to a procedure and an apparatus for optimizing the visual quality of an image. In the procedure, the greyness balance of the image is adjusted by a statistical method and the color reproduction is adjusted to make it correspond to a standard observer's preference, which is a predetermined optimum value for color reproduction. The procedure can be used e.g. to improve the quality of images transmitted over information networks by providing the image transmission path with an apparatus which corrects images detected in the transmission path by applying the procedure of the present invention.