Stereo Products

FLIR has made stereo vision practical for a variety of research areas by providing hardware and software packages that include complete stereo processing support – from image correction and alignment to dense correlation-based stereo mapping. Stereo vision works in a similar way to 3D sensing in human vision. It begins with identifying image pixels that correspond to the same point in a physical scene observed by multiple cameras. The 3D position of a point can then be established by triangulation using a ray from each camera. The more corresponding pixels identified, the more 3D points that can be determined with a single set of images. Correlation stereo methods attempt to obtain correspondences for every pixel in the stereo image, resulting in tens of thousands of 3D values generated with every stereo image.


Stereo image processing pipeline


Calibration Quality & Image Rectification

FLIR Stereo Vision cameras are factory-calibrated for lens distortion and camera misalignments, to ensure consistency of calibration across all cameras and eliminate the need for in-field calibration. During the rectification process, epipolar lines are aligned to within 0.05* pixels RMS error. Calibration results are stored on the camera, allowing the software to retrieve image correction information without requiring camera-specific files on the host computer. This allows seamless swapping of cameras and easy use of multi-camera systems. The camera case is also specially designed to protect the calibration against mechanical shock and vibration.

Images can be rectified to any image size, making it easy to change the resolution of stereo results depending on speed and accuracy requirements. Camera calibration and rectification are key to getting high quality disparity images from a stereo camera.


INTRO TO STEREO VISION

Key Features

• Full field-of-view depth measurements from a single image set
• Accurate – Epipolar lines are aligned to within 0.05 pixels RMS error based on a stereo resolution of 320×240
• Real time transformation of images to 3D data. Cameras easily generate one million 3D points per second
• Easy integration with other machine vision techniques. The images and 3D data are perfectly registered
• Passive 3D sensing – no lasers or projectors required
• No manual adjustements or in-field calibration required
• Triclops™ Software Development Kit included with all FLIR Bumblebee stereo systems


Bumblebee2

The Bumblebee®2 is the next generation Bumblebee® stereo vision camera. It provides a balance between 3D data quality, processing speed, size and price. Developed as a drop-in replacement for the original Bumblebee camera, the Bumblebee2 also features double the frame rate and a GPIO connector for external trigger and strobe functionality.

Sensor Two Sony 1/3″ progressive scan CCDs, Color/BW
Resolution and FPS 640×480 at 48FPS or 1024×768 at 20FPS
Lenses 2.5mm (100° HFOV), 3.8mm (65° HFOV), 6mm (43° HFOV) focal lengths
Calibration Pre-calibrated to within 0.1 pixel RMS error*
General Purpose IO GPIO pins for external trigger / strobe

 

*Based on a stereo resolution of 640×480 and is valid for all camera models. Calibration accuracy will vary from camera to camera.

 
Bumblebee3 (XB3)

The Bumblebee® XB3 is a 3-sensor multi-baseline IEEE-1394b (800Mb/s) stereo camera designed for improved flexibility and accuracy. It features 1.3 mega-pixel sensors and has two baselines available for stereo processing. The extended baseline and high resolution provide more precision at longer ranges, while the narrow baseline improves close range matching and minimum-range limitations.

Sensor Three Sony 1/3″ progressive scan CCDs, Color/BW
Resolution and FPS 1280×960 at 15FPS
Lenses 3.8mm (70° HFOV) or 6mm (50° HFOV) focal length
Calibration Pre-calibrated to within 0.1 pixel RMS error
General Purpose IO GPIO pins for external trigger / strobe

 

*Based on a stereo resolution of 640×480 and is valid for all camera models. Calibration accuracy will vary from camera to camera.

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