A good GPS sensor (RTK-GPS) can provide as low as 1
cm error of horizontal position [4], but only under good
conditions. Error sources are the numbers of satellites visible,
signal multi-path and dropouts. This position is also global,
and not directly related to the crops measured in the images
from the camera.
A camera sensor and an algorithm comparing consecutive
frames, also known as visual odometry, can provide this
non-contact measurement. There are different methods to
determine the position. Work on visual odometry has been
done with both mono and stereo cameras and with cameras
mounted at different angle to the ground [5]-[9].
The feasibility of a visual odometer system has been
shown in [5], where high slip terrain on Mars surface makes
it hard to navigate using wheel encoders. Since there is no
system for global positioning such as the GPS system on
Mars, the visual odometry has become a critical vehicle
safety system. A stereo camera setup is used and Harris
corners are detected as features, which are matched and
tracked using RANSAC with least square estimator for
outlier rejection.
A good GPS sensor (RTK-GPS) can provide as low as 1
cm error of horizontal position [4], but only under good
conditions. Error sources are the numbers of satellites visible,
signal multi-path and dropouts. This position is also global,
and not directly related to the crops measured in the images
from the camera.
A camera sensor and an algorithm comparing consecutive
frames, also known as visual odometry, can provide this
non-contact measurement. There are different methods to
determine the position. Work on visual odometry has been
done with both mono and stereo cameras and with cameras
mounted at different angle to the ground [5]-[9].
The feasibility of a visual odometer system has been
shown in [5], where high slip terrain on Mars surface makes
it hard to navigate using wheel encoders. Since there is no
system for global positioning such as the GPS system on
Mars, the visual odometry has become a critical vehicle
safety system. A stereo camera setup is used and Harris
corners are detected as features, which are matched and
tracked using RANSAC with least square estimator for
outlier rejection.
การแปล กรุณารอสักครู่..
A good GPS sensor (RTK-GPS) can provide as low as 1
cm error of horizontal position [4], but only under good
conditions. Error sources are the numbers of satellites visible,
signal multi-path and dropouts. This position is also global,
and not directly related to the crops measured in the images
from the camera.
A camera sensor and an algorithm comparing consecutive
frames,ยังเป็นที่รู้จัก odometry ภาพสามารถให้นี้
การวัดแบบไม่สัมผัส . มีวิธีการที่แตกต่างกัน
หาตำแหน่ง ทำภาพ odometry ได้รับ
เสร็จทั้งโมโนและสเตอริโอกล้องและกล้อง
ติดตั้งที่แตกต่างกันมุมพื้นดิน [ 5 ] - [ 9 ] .
ความเป็นไปได้ของระบบเข็มภาพได้รับ
แสดงใน [ 5 ] ที่ภูมิประเทศบนพื้นผิวดาวอังคารทำให้
ใบสูงit hard to navigate using wheel encoders. Since there is no
system for global positioning such as the GPS system on
Mars, the visual odometry has become a critical vehicle
safety system. A stereo camera setup is used and Harris
corners are detected as features, which are matched and
tracked using RANSAC with least square estimator for
outlier rejection.
การแปล กรุณารอสักครู่..