This paper introduces a new CBIR system based on two different approaches in order to achieve the retrieval efficiency and accuracy. Color and texture information is extracted and used in this work to form the feature vector. To do the texture feature extraction this system uses DCT and DCT Wavelet transform to generate the feature vectors of the query and database images. Color information ext...

background: oculocutaneous albinism type1 (oca1) is characterized by the absence of melanin pigmentation. the muta­tion on tyr gene makes oca1 as an autosomal recessive genetic disorder. in this study, we delineated the genetic analysis of an iranian family with four members affected with oca1.  methods: clinical exams and paraclinical test were performed for all patients of the case family, al...

This paper proposes new image compression technique that uses Real Fourier Transform. Discrete Fourier Transform (DFT) contains complex exponentials. It contains both cosine and sine functions. It gives complex values in the output of Fourier Transform. To avoid these complex values in the output, complex terms in Fourier Transform are eliminated. This can be done by using coefficients of Discr...

Multi-point network video services require compositing several video sources into a single displayed video stream. Compositing video directly in the compressed domain can save computations by processing less data and avoiding the conversion process back and forth between the compressed and uncompressed data formats. Earlier work has demonstrated the computational speedup of compositing DCT-comp...

زۆربەى لێکۆڵينەوەکان کە لە سەر ناوچەى ئاکرێ نووسراون زیاتر لایەنەکانى سیاسى و کارگێڕى سەربازى دەگرێتەوە, کاتێکدا بوارە گرنگەکانى ديكه‌ى ژیان فەرامۆش کراون، بە تایبەتى لایەنى ئابوورى نێویشيدا بوارى کشتوکاڵ زەورى زار، پەیوەندى راستەوخۆى لەگەڵ ژیانى مروڤدا هەیە, سەرەڕاى ئەمەش لەچاو کەمتر بایەخى پێ دراوە, بۆیە پێمان باش بوو لەسەر ئەم بابەتە بنووسين. ئامانجى سەرەکیشمان ئەوەیە بەم لێکۆڵینەوە لایەنێکى...

In the asymmetric hydrovinylation (HV) of an E/Z-mixture of a prototypical 1,3-diene with (S,S)-(DIOP)CoCl2 or (S,S)-(BDPP)CoCl2 catalyst in the presence of Me3Al, the (E)-isomer reacts significantly faster, leaving behind the Z-isomer intact at the end of the reaction. The presumed [LCo-H](+)-intermediate, especially when L is a large-bite angle ligand, similar to DIOP and BDPP, promote an unu...

An Advanced DCT based image Coder (ADCTC) is proposed in this paper. It uses partition schemes, i.e. variable size DCT transforms of image blocks, coding of numbers of significant bits (NOSB), context modeling and coding of signs of DCT coefficients. Advantages of ADCTC in comparison to other recently proposed DCT and wavelet based coders including standards JPEG and JPEG2000 are demonstrated.