Objective measurements of video quality using the wavelet transform

Chulhee Lee; Ohjae Kwon

doi:10.1117/1.1523420

1 January 2003 Objective measurements of video quality using the wavelet transform

Chulhee Lee, Ohjae Kwon

Optical Engineering, Vol. 42, Issue 1, (January 2003). https://doi.org/10.1117/1.1523420

We propose a new method for objective measurement of video quality using the wavelet transform. We exploit the fact that the sensitivity of the human visual system varies over spatiotemporal frequencies. First, in order to compute spatial-frequency components, the wavelet transform is applied to each frame of source and processed videos. Then, the difference (squared error) of the wavelet coefficients in each subband is computed and summed, producing a difference vector for each frame. By repeating this procedure for all the frames of a video, we obtain a sequence of difference vectors, and then the average vector is computed. Each component of this average vector represents a difference in a certain spatial frequency. In order to take into account the temporal frequencies, we also propose a modified 3-D wavelet transform. In either case, a single vector represents the difference between the source and the processed video. From this vector, a number is computed as a weighted sum of its elements and is used as an objective score. In order to find the optimal weight vector, an optimization procedure is proposed. Experimental results show that the proposed method compares favorably with the current objective methods for video quality measurement.

©(2003) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Chulhee Lee and Ohjae Kwon "Objective measurements of video quality using the wavelet transform," Optical Engineering 42(1), (1 January 2003). https://doi.org/10.1117/1.1523420

Published: 1 January 2003

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available