Comments on 'Area and power efficient DCT architecture for image compression' by Dhandapani and Ramachandran

نویسندگان

  • Renato J. Cintra
  • Fábio M. Bayer
چکیده

In [Dhandapani and Ramachandran, “Area and power efficient DCT architecture for image compression”, EURASIP Journal on Advances in Signal Processing 2014, 2014:180] the authors claim to have introduced an approximation for the discrete cosine transform capable of outperforming several well-known approximations in literature in terms of additive complexity. We could not verify the above results and we offer corrections for their work.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Area and power efficient DCT architecture for image compression

The discrete cosine transform (DCT) is one of the major components in image and video compression systems. The final output of these systems is interpreted by the human visual system (HVS), which is not perfect. The limited perception of human visualization allows the algorithm to be numerically approximate rather than exact. In this paper, we propose a new matrix for discrete cosine transform....

متن کامل

Vlsi Architecture for Image Compression through Adder Minimization Technique at Dct Structure

Data compression plays a vital role in multimedia devices to present the information in a succinct frame. Initially, the DCT structure is used for Image compression, which has lesser complexity and area efficient. Similarly, 2D DCT also has provided reasonable data compression, but implementation concern, it calls more multipliers and adders thus its lead to acquire more area and high power con...

متن کامل

Cordic Iterations based Architecture for Low Power and High Quality DCT

Discrete Cosine Transform (DCT) is widely used in image and video compression standards. This paper presents low-power co-ordinate rotation digital computer (CORDIC) based reconfigurable discrete cosine transform (DCT) architecture. All the computations in DCT are not equally important in generating the frequency domain output. Considering the important difference in the DCT co-efficient the nu...

متن کامل

Joint Optimization of Low-Power DCT Architecture and Efficient Quantization Technique for Embedded Image Compression

The Discrete Cosine Transform (DCT)-based image compression is widely used in today’s communication systems. Significant research devoted to this domain has demonstrated that the optical compression methods can offer a higher speed but suffer from bad image quality and a growing complexity. To meet the challenges of higher image quality and high speed processing, in this chapter, we present a j...

متن کامل

Lossless Microarray Image Compression by Hardware Array Compactor

Microarray technology is a new and powerful tool for concurrent monitoring of large number of genes expressions. Each microarray experiment produces hundreds of images. Each digital image requires a large storage space. Hence, real-time processing of these images and transmission of them necessitates efficient and custom-made lossless compression schemes. In this paper, we offer a new archi...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • EURASIP J. Adv. Sig. Proc.

دوره 2017  شماره 

صفحات  -

تاریخ انتشار 2017