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Focal Length and Baseline Calculator for Stereo Cameras - MYNTAI

Focal Length and Baseline Calculator for Stereo Cameras

The calculator can calculate the required focal length and corresponding viewing angle and help you choose proper stereo depth cameras, such as our MYNT EYE series. It can also assist you in choosing the baseline distance and predict depth errors,etc.

Image Sensor Parameters

Manually input the parameters of your image sensor so that we can precisely calculate the focal length and baseline of your stereo camera.

Focal Length

Three ways are provided to determine the focal length:
1. Manually input the focal length;
2. Calculate the focal length based on a specified viewing angle;
3. Determine the focal length from expected projection transformation. In such case, you need to input the size and distance of your assumed object as well as the projection size in the camera image.

Solid Geometry Metric (optional)

To calculate the baseline distance of the stereo depth camera, you are required to further input the minimum depth and viewing angle range for depth measurement. Then the baseline distance is calculated to make the depth measurement at the minimum focal length have the maximum parallax value.

Start calculation
Image Sensor Properties
 
Sensor size
 
  • 1/6"
  • 1/4"
  • 1/5"
  • 1/3.6"
  • 1/3.2"
  • 1/3"
  • 1/2.9"
  • 1/2.7"
  • 1/2.5"
  • 1/2"
  • 1/1.8"
  • 1/1.7"
  • 2/3"
  • 1/1.2"
  • 1"
  • 4/3"
  • 35 mm film
 
  • m
  • cm
  • mm
  • in
  • ft
 
Sensor resolution
 
Please enter a valid number
Pixels
X
Pixels
Pixel binning
 
  • 1x1
  • 2x2
  • 3x3
  • 4x4
  • 5x5
  • 6x6
  • 7x7
  • 8x8
ROI extraction
 
Please enter a valid number
Pixels
X
Pixels
Focal Length
Specify focal length manually
 
  • m
  • cm
  • mm
  • in
  • ft
Focal length from field of view (with respect to ROI)
 
°
 
  • horizontally
  • vertically
  • diagonally
Determine focal length from desired projection
 
  • m
  • cm
  • mm
  • in
  • ft
 
  • m
  • cm
  • mm
  • in
  • ft
 
Please enter a valid number
Pixels
Stereo Geometry
Compute baseline from minimum depth
 
  • m
  • cm
  • mm
  • in
  • ft
Baseline from manual input
 
  • m
  • cm
  • mm
  • in
  • ft
 
Disparity range
 
  • 64 pixels
  • 96 pixels
  • 128 pixels
  • 160 pixels
  • 192 pixels
  • 224 pixels
  • 256 pixels
 
Please enter a valid number
Pixels
 
Expected disparity error
 
Pixels

Results

Image Sensor Metrics
Sensor width:
mm ( pixels)
Sensor height:
mm ( pixels)
Pixel pitch:
µm (after binning)
ROI width:
mm ( pixels)
ROI height:
mm ( pixels)
Lens Metrics
Focal length:
mm
Horizontal angle of view (ROI):
°
Vertical angle of view (ROI):
°
Diagonal angle of view (ROI):
°
Stereo Geometry Metrics
Baseline distance:
Minimum depth:
ROI with full disparity range:
pixels()
ROI with half disparity range:
pixels()
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MYNT AI is a Silicon Valley AI startup that creates superhuman eyes for robots and cars. It was founded by a group of serial entrepreneurs, computer vision scientists, machine learning experts, architects, and senior engineers from Stanford, Motorola, Nokia, Samsung, and Baidu in 2014. It has grown into a team of hundred gurus cross US and China. MYNT has developed series of MYNTeye™ - IMU integrated structured-light stereo depth cameras, VIO and VSLAM software using its 3D cameras, and customized visual navigation and mapping solutions for service robots, vacuum bots, and ADAS.

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