Shadow elimination for effective moving object detection by Gaussian shadow modeling

نویسندگان

  • Jun-Wei Hsieh
  • Wen-Fong Hu
  • Chia-Jung Chang
  • Yung-Sheng Chen
چکیده

This paper presents a novel approach for eliminating unexpected shadows from multiple pedestrians from a static and textured background using Gaussian shadow modeling. First, a set of moving regions are segmented from the static background using a background subtraction technique. The extracted moving region may contain multiple shadows from various pedestrians. In order to remove these unwanted shadows completely, a histogram-based method is proposed for isolating each pedestrian from the extracted moving region. Based on the results, a coarse-to-fine shadow modeling process is then applied for eliminating the unwanted shadow from the detected pedestrian. At the coarse stage, a moment-based method is first used for obtaining the rough shadow boundaries. Then, the rough approximation of the shadow region can be further refined through Gaussian shadow modeling. The chosen shadow model is parameterized with several features including the orientation, mean intensity, and center position of a shadow region. With these features, the chosen model can precisely model different shadows at different conditions and provide good capabilities for completely eliminating the unexpected shadows from the scene background. Due to the simplicity of the proposed method, all the shadows can be eliminated immediately (in less than 0.5 seconds). Experiments demonstrate that approximately 94% of shadows can be successfully eliminated from the scene background.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Shadow Elimination for Effective Moving Object Detection with Gaussian Models

This paper presents a coarse-to-fine approach to eliminate unexpected shadows of multiple pedestrians from a static and textured background using Gaussian shadow modeling. At the coarse stage, a moment-based method is proposed to estimate the rough boundaries between shadows and moving objects. Then, at the fine stage, the rough approximation of shadow region provides a key to model shadows. Th...

متن کامل

Improving Vehicle Detection Accuracy Based on Vehicle Shadow and Superposition Elimination

Vehicle shadow and superposition have a great influence on the accuracy of vehicles detection in traffic video. Many background models have been proposed and improved to deal with detection moving object. This paper presented a method which improves Gaussian mixture model to get adaptive background. The HSV color space was used to eliminate vehicle shadow, it was based on a computational colour...

متن کامل

Detection and Tracking of Multiple Moving Objects for Surveillance and Security System

In this paper, detection and tracking of moving object with shadow removal, automated counting and alarm generation was proposed. Improved Gaussian mixture model was used for background subtraction and modeling as it robustly deals with lighting changes, repetitive motions, clutter and slowly moving objects. Shadow detection and removal was performed using improved HSV color space method. Morph...

متن کامل

Moving cast shadow detection using online sub-scene shadow modeling and object inner-edges analysis

In this paper, we propose an adaptive and accurate moving cast shadow detection method employing online sub-scene shadow modeling and object inner-edges analysis for applications of static-camera video surveillance. To describe shadow appearance more accurately, the proposed method builds adaptive online shadow models for sub-scenes with different conditions of irradiance and reflectance. The o...

متن کامل

Mech , J . Ostermann : Detection of Moving Cast Shadows for Object

| To prevent moving shadows being misclassiied as moving objects or parts of moving objects, this paper presents an explicit method for detection of moving cast shadows on a dominating scene background. Those shadows are generated by objects moving between a light source and the background. Moving cast shadows cause a frame diierence between two succeeding images of a monocular video image sequ...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Image Vision Comput.

دوره 21  شماره 

صفحات  -

تاریخ انتشار 2003