CALIBRATION OF A DIGITAL CAMERA FOR CLOSE-RANGE PHOTOGRAMMETRY APPLICATION Nor Azira Alias, Halim Setan & Zulkepli Majid Department of Geomatics Engineering, Faculty of Geoinformation Science and Engineering, Universiti Teknologi Malaysia (UTM) Skudai, Malaysia e-mail: nazira7@siswa.utm.my halim@utm.my zulkepli@fksg.utm.my Tel: + 6075530801 Fax: +6075566163 Abstract Lately, close-range photogrammetry became more popular to model any objects in varies field. With the advent of powerful computers and cheap optical devices, photogrammetric methods are now being implemented in several aspects of medicine. The body shape measurement such as craniofacial mapping is included of close-range photogrammetry applications. Compared with other technique like laser scanning, digital close-range photogrammetry is more cost-effective, flexible and easy to use. Integrated with new commercial three-dimensional (3D) modeling and measurement software such as PhotoModeler Scanner that can be used with many digital cameras, it was very effective technique. However, to give high-accuracy results, the cameras must be calibrated to determine parameter of the camera that will be used. The paper presents the camera calibration (Sony DSC-F828 digital camera) using the new 3D software, PhotoModeler Scanner and the results will be compared with the Australis 6.0 software. Keywords: Close-range photogrammetry, 3D Modeling and Measurement software, Camera Calibration 1.0 INTRODUCTION Photogrammetry (the art, science, and technology of obtaining reliable information from photographic images) has traditionally utilized commercial, large-format, aerial photography. This technology can be used to measure, document, or monitor almost anything that is visible within a photograph. According to Karrara (1989), photogrammetry can be defined as method used to get quantitative information about physical object and conditions through measurement, recording and images described. The photogrammetry also can be divided into a few categories, depending on the distance of the camera from the subject. Two techniques of photogrammetry that depending on the lens-setting (distance) of the camera are far range photogrammetry (with camera distance setting to indefinite) and close-range photogrammetry (with camera distance to finite values). This paper was contains close-range photogrammetry technique and to be focused on digital camera calibration. Actually, in close-range photogrammetry, an object was captured at the distance less than 100 meters. The image was captured using the camera by evolving the object or captured from the inside of