Digital camera zooming based on unified CFA image processing steps
نویسندگان
چکیده
منابع مشابه
Digital Camera Image Formation: Processing and Storage
This chapter presents a high-level overview of image formation in a digital camera, highlighting aspects of potential interest in forensic applications. The discussion here focuses on image processing, especially processing steps related to concealing artifacts caused by camera hardware or that tend to create artifacts themselves. Image storage format issues are also discussed.
متن کاملDigital zooming for color filter array-based image sensors
In this paper, zooming methods which operate directly on color filter array (CFA) data are proposed, analyzed, and evaluated. Under the proposed framework enlarged spatial resolution images are generated directly from the CFA-based image sensors. The reduced computational complexity of the proposed schemes makes them ideal for real-time surveillance systems, industrial strength computer vision ...
متن کاملImprovements on Source Camera-model Identification Based on Cfa Interpolation
The idea of using traces of interpolation algorithms, deployed by a digital camera, as an identifier in the source camera-model identification problem has been initially studied in [2]. In this work, we improve our previous approach by incorporating methods to better detect the interpolation artifacts in smooth image parts. To identify the source cameramodel of a digital image, new features tha...
متن کاملEfficient estimation of CFA pattern configuration in digital camera images
This paper proposes an efficient method to determine the concrete configuration of the color filter array (CFA) from demosaiced images. This is useful to decrease the degrees of freedom when checking for the existence or consistency of CFA artifacts in typical digital camera images. We see applications in a wide range of multimedia security scenarios whenever inter-pixel correlation plays an im...
متن کاملPhotogrammetric processing of digital 360° panoramic camera image data
Digital panoramic cameras have found growing interest in photogrammetry in the past few years. Originally primarily being used for purposes such as web-based animation or surveillance, panoramic cameras have meanwhile reached a performance, which makes them an interesting data acquisition tool for a number of applications in photogrammetry. New developments in sensor technology have enabled the...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Consumer Electronics
سال: 2004
ISSN: 0098-3063
DOI: 10.1109/tce.2004.1277836