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Median filter is usefiil in image and video processing. It can be used for filtering noises, for estimating background images, and so on. However, median filter is time-consuming. This paper presents a new method for realizing the median filter in GPU (Graphics Processing Unit) for background estimation problem. The proposed method can perform the filtering in just several milliseconds for each frame...
Motorbike detection is not a novel problem. However, as it is not a common vehicle in most countries in the world, there is barely enough research on vision-based methods for motorbike detection, even more so for motorbike detection in dense clusters. In this work, we proposed a detection method that is able to overcome fair occlusions in traffic images. The method is centered around a robust model:...
Human-crowd density estimation problem has always been difficult when the scenario is affected by strong perspective distortion and high occlusion. However, this difficulty can be mitigated by the indirect counting approach, i.e. counting them without actually detecting them. Based on this approach, Qing Wen et al. proposed a method relies on the texture features extraction using Gabor filters and...
Motorbike is an interesting subject for both the object counting and object detecting problem. In developing countries, motorbike is the most popular vehicle. In traffic, knowledge of motorbike's count will reveal the overall density while knowing of motorbike's positions will reveal the direction of vehicles flows. For each of those tasks, we usually need a different approach. But, it will be wasteful...
Recent growth of traffic surveillance based on computer vision techniques has caught more and more attentions from researchers. Since the detection of vehicles is the primary step of such system, there is a large body of works towards developing an efficient detection scheme on various operating conditions. However, those works mainly focus on the detection of car and pedestrian. In this paper, we...
This paper presents a new license plate detection method based on the Canny edge detection and Sauvola binarization combine with Connected Components Analysis (CCA) and edge dilation. The proposed method was tested with 944 images in many different weather conditions and many different sizes of plates with only one configuration for all. We also build a ground-truth for each images and base on this...
Median filter is well-known for researchers in many fields. In image and video processing, it can be used for filtering noises, for estimating background images, and so on. Its effectiveness is undoubtful. However, median filter is time-consuming. This paper presents a new method for computing median filter's response. The proposed method is O(l) and better than existing methods analytically and experimentally...
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