Image file formats

About: Image file formats is a research topic. Over the lifetime, 10349 publications have been published within this topic receiving 102407 citations.

Method and apparatus for encoding photographic images

Abstract: A method of encoding images comprising the steps of retrieving a source image file including pixel data, transforming the source image file pixel data into a destination data set of pixel data representative of a modified partial equi-rectangular projection, and outputting the pixel data from the destination data set as a destination image file. The source image file can include an annular source image file. An apparatus for encoding images in accordance with the method is also provided.

Access control system, lock device, administration device, and associated methods and computer program products

Abstract: An access control system uses an existing file format standard, e.g. for personal data interchange (PDI) or image file interchange, for novel access control purposes to provide temporary access for a wireless key device to a lock device and its protected environment by creat ing appropriate temporary access defining data in a data object compliant with the file format standard and communicating the data object to the lock device via the wireless key device.

Method and apparatus for ordering photographic prints and printing apparatus for producing the same

Abstract: A digital camera loaded with a removable memory card storing image files and a print order file, in a wireless mode, sends the files to a computer via a handy phone set, and prepares a directory information file in which the files are virtually positioned in a preselected layer, so that the directory structure of the memory card can be reconstructed. The camera then accesses the handy phone set to send the files to the computer. The computer reconstructs the original directory structure and file names based on the directory information file and then prints out the image data of the image files in accordance with the print order file. The computer produces prints in the same manner as when directly reading the image data from the memory card.

Searching Near-Replicas of Images via Clustering

Abstract: Internet piracy has been one of the major concerns for Web publishing. In this study we present a system, RIME, that we have prototyped for detecting unauthorized image copying on the WWW. To speed up the copy detection, RIME uses a new clustering/hashing approach that first clusters similar images on adjacent disk cylinders and then builds indexes to access the clusters made in this way. Searching for the replicas of an image often takes just one IO to loop up the location of the cluster containing similar objects and one sequential file IO to read in this cluster. Our experimental results show that RIME can detect images copies both more efficiently and effectively than the traditional content- based image retrieval systems that use tree-like structures to index images. In addition, RIME copes well with image format conversion, resampling, requantization and geometric transformation.© (1999) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

Method for compiling an image database, an image database system, and an image data storage medium

Abstract: A method and system for automatically compiling an image database containing facial images for a large number of people searches all facial images stored in a face dictionary containing image data and attribute information for known persons for all images stored in an image database. When matching facial images are found, the attribute information from the face dictionary is added to the image information in the image database as an index to that information. The current record indicated by a record pointer is loaded to obtain the file path to the image file, which is stored with the data record. The image file is then loaded, the record pointer in the face dictionary is moved to the top, and the current record indicated by the record pointer in the face dictionary is loaded. Attribute information such as personal name, address, sex, and job title, and a facial image or facial features enabling a person to be identified, are stored to each record in the face dictionary, and can therefore be obtained by loading a face dictionary record. A particular person can then be searched for and evaluated based on the image data loaded from the image database, and facial image information loaded from the face dictionary.