TY - GEN
T1 - Improving variance estimation ratio score calculation for slow moving point targets detection in infrared imagery sequences
AU - Huber-Shalem, Revital
AU - Hadar, Ofer
AU - Rotman, Stanley R.
AU - Huber-Lerner, Merav
AU - Evstigneev, Stanislav
PY - 2013/11/8
Y1 - 2013/11/8
N2 - Infrared (IR) imagery sequences are commonly used for detecting moving targets in the presence of evolving cloud clutter or background noise. This research focuses on slow moving point targets that are less than one pixel in size, such as aircraft at long ranges from a sensor. The target detection performance is measured via the variance estimation ratio score (VERS), which essentially calculates the pixel scores of the sequences, where a high score indicates a target is suspected to traverse the pixel. VERS uses two parameters - long and short term windows, which were predetermined individually for each movie, depending on the target velocity and on the clouds intensity and amount, as opposed to clear sky (noise), in the background. In this work, we examine the correlation between the sequences' spatial and temporal features and these two windows. In addition, we modify VERS calculation, to enhance target detection and decrease cloud-edge scores and false detection. We conclude this work by evaluating VERS as a detection measure, using its original version and its modified version. The test sequences are both original real IR sequences as well as their relative compressed sequences using our designated temporal DCT quantization method.
AB - Infrared (IR) imagery sequences are commonly used for detecting moving targets in the presence of evolving cloud clutter or background noise. This research focuses on slow moving point targets that are less than one pixel in size, such as aircraft at long ranges from a sensor. The target detection performance is measured via the variance estimation ratio score (VERS), which essentially calculates the pixel scores of the sequences, where a high score indicates a target is suspected to traverse the pixel. VERS uses two parameters - long and short term windows, which were predetermined individually for each movie, depending on the target velocity and on the clouds intensity and amount, as opposed to clear sky (noise), in the background. In this work, we examine the correlation between the sequences' spatial and temporal features and these two windows. In addition, we modify VERS calculation, to enhance target detection and decrease cloud-edge scores and false detection. We conclude this work by evaluating VERS as a detection measure, using its original version and its modified version. The test sequences are both original real IR sequences as well as their relative compressed sequences using our designated temporal DCT quantization method.
KW - compression
KW - cosine filter
KW - discrete cosine transform (DCT)
KW - infrared (IR) imagery
KW - spatial characteristics
KW - temporal characteristics
KW - variance estimation ratio score
UR - http://www.scopus.com/inward/record.url?scp=84886994947&partnerID=8YFLogxK
U2 - 10.1117/12.2023681
DO - 10.1117/12.2023681
M3 - Conference contribution
AN - SCOPUS:84886994947
SN - 9780819497079
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Signal and Data Processing of Small Targets 2013
T2 - Signal and Data Processing of Small Targets 2013
Y2 - 28 August 2013 through 29 August 2013
ER -