2,031 research outputs found
Paradigm for YOLO-based Infrared Small Target Detection
Detecting small to tiny targets in infrared images is a challenging task in
computer vision, especially when it comes to differentiating these targets from
noisy or textured backgrounds. Traditional object detection methods such as
YOLO struggle to detect tiny objects compared to segmentation neural networks,
resulting in weaker performance when detecting small targets. To reduce the
number of false alarms while maintaining a high detection rate, we introduce an
decision criterion into the training of a YOLO detector.
The latter takes advantage of the of small targets to
discriminate them from complex backgrounds. Adding this statistical criterion
to a YOLOv7-tiny bridges the performance gap between state-of-the-art
segmentation methods for infrared small target detection and object detection
networks. It also significantly increases the robustness of YOLO towards
few-shot settings.Comment: Accepted to ICASSP 202
Quantum Noise in Multipixel Image Processing
We consider the general problem of the quantum noise in a multipixel
measurement of an optical image. We first give a precise criterium in order to
characterize intrinsic single mode and multimode light. Then, using a
transverse mode decomposition, for each type of possible linear combination of
the pixels' outputs we give the exact expression of the detection mode, i.e.
the mode carrying the noise. We give also the only way to reduce the noise in
one or several simultaneous measurements.Comment: 8 pages and 1 figur
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