To address the standardization issues of perceptually based image quality for printing systems, ISO/IEC JTC1/SC28, the standardization committee for office equipment chartered the W1.1 project with the responsibility of drafting a proposal for an international standard for the evaluation of printed image quality. One of the W1.1 task teams is chartered to address the issue of ”Gloss and Gloss U...

Analogous to use of bullet scratches in forensic science, the authenticity of a digital image can be verified through the noise characteristics of an imaging sensor. In particular, photo-response non-uniformity noise (PRNU) has been used in source camera identification (SCI). However, this technique can be used maliciously to track or inculpate innocent people. To impede such tracking, PRNU noi...

This research aimed to evaluate the effects of X-ray current tube on uniformity value CT image noise. used images Siemens head water phantom. The phantom was scanned with a Somatom Scope scanner for various tubes (i.e., 180 mAs, 200 220 240 and 260 mAs) voltage 110 kV, slice thickness 3 mm, FOV mm. values in noise were analyzed using standard deviation (SD). SD measured by ROI process 5 differe...

This paper evaluates the potential for the real-time utilization of high frame rate image sequences using a fully parallel readout system. Multiple readout architectures for high frame rate imaging are compared. The application domain for a fully parallel readout system is identified, and the design for a fully parallel, monolithically integrated smart CMOS focal plane array is presented. This ...

A new color image compression technique based on moment-preserving and block truncation coding is proposed. An input image is divided into nonoverlapping blocks and each block pixel is assigned one of two representative colors, which are computed with analytic formulas derived from preserving certain moments in the block. A bit map is then generated for each block to represent the pixels’ color...

The aim of this work is to introduce a novel statistical technique for quantifying the concentration field uniformity liquid-liquid mixing process within micro-scale chaotic pipeline. For illustration, microscale mixer in which inlet direction parallel unit designed by using pipeline with Baker map. Meanwhile, non-uniformity coefficient method adopted quantificationally instead qualitatively es...

This paper examines the uses of text and its representation on Web documents in terms of the challenges in its interpretation. Particular attention is paid to the significant problem of non-uniform representation of text. This non-uniformity is mainly due to the presence of semantically important text in image form as opposed to the standard encoded text. The issues surrounding text representat...

Shadows cause problems in image processing. In this paper, a new methodology for shadow removal based on Strong Edge Detection (SED) method is proposed. The strong shadow edges are recognized by learning the patch based characteristics of shadow edges and then image features are analyzed to guide a Shadow Edge Classifier. Also, spatial patch smoothing is used to enforce uniformity between adjac...

This paper discusses methods to estimate the quality as well as validity of a fingerprint image. Orientation certainty is used to certify the localized texture pattern of the fingerprint images while ridge to valley structure is analyzed to detect invalid images. Global uniformity and continuity ensures that the image is valid as a whole. 150 images with various qualities are evaluated using th...