25 search results - page 2 / 5 » A detection algorithm for zero-quantized DCT coefficients in... |
JMM2
2008
13 years 5 months ago
2008
In this work, an adaptive image compression algorithm is proposed based on the prediction of AC coefficients in Discrete Cosine Transform (DCT) block during reconstruction of image...
TCSV
2002
13 years 5 months ago
2002
A novel frequency-domain technique for image blocking artifact detection and reduction is presented in this paper. The algorithm first detects the regions of the image which presen...
IPCV
2008
13 years 7 months ago
2008
- We report classification experiments using the pilot Infant COPE database of neonatal facial expressions. Two sets of DCT coeffiecents were used to train a neural network simulta...
ICMCS
2007
IEEE
13 years 12 months ago
2007
IEEE
Digital images can be forged easily with today’s widely available image processing software. In this paper, we describe a passive approach to detect digital forgeries by checkin...
ICIP
2001
IEEE
14 years 7 months ago
2001
IEEE
Given a color image that was quantized in some hidden color space (termed compression color space) during previous JPEG compression, we aim to estimate this unknown compression co...