The operating principle of the blaze camera is based on using several exposures with different frequencies and combining the data from those exposures. The result is highly accurate depth data. This approach ensures that interferences from objects outside of the camera's working range are minimized. The other advantage is that working ranges of up to 10 m are possible. The downside is that this introduces a certain amount of motion blur.
When acquiring images with the blaze camera, each frame is composed of eight subframes. Four of these subframes are taken in Short Range (with a frequency of 100 MHz) and the other four subframes are taken in Long Range (with a frequency of 15 MHz). This combines the higher accuracy of the Short Range mode with the longer range of the Long Range mode.
By selecting an operating mode, the values of the
WorkingRangeMax parameters change accordingly. These parameters are read-only. To adjust the working range, use the
Changing the operating mode also affects the exposure time. When changing to Long Range, the exposure time is set to the maximum value (1 ms). When changing to Short Range, the exposure time is set to the minimum value (250 µs). This is done in order to avoid overexposure in Short Range or underexposure in Long Range. Using the Exposure Time parameter, you can adjust the exposure time as desired.
Selecting an Operating Mode#
OperatingModeparameter to one of the following values:
ShortRange: Enables the Short Range operating mode.
LongRange: Enables the Long Range operating mode.
Available Operating Modes#
|Short Range||Long Range|
|Range||0.3–1.5 m||0.3–10 m|
|Accuracy||±5 mm (0.5–5.5 m)||±5 mm (0.5–5.5 m)|
|Temporal Noise||<2 mm (up to 1.5 m)||<5 mm (up to 5.5 m)|
Increasing the Frame Rate#
In normal operating mode, the blaze-101 camera achieves a frame rate of 20 fps. This frame rate can be increased by enabling the Fast Mode feature. However, there is a trade-off between the accuracy of the depth data and the speed, i.e., frame rate, when working in the Long Range mode. The general recommendation is to leave Fast Mode disabled unless you require a higher frame rate or if you want to reduce motion artifacts.