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thermalsensors [2020/11/07 21:00] wf68spef |
thermalsensors [2020/11/19 02:32] wf68spef |
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| ====== Thermal sensors ====== | ====== Thermal sensors ====== | ||
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| ===== Talk with acalbi sales engineer ===== | ===== Talk with acalbi sales engineer ===== | ||
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| * < 9 Hz Frame Rate | * < 9 Hz Frame Rate | ||
| * 1,000 ft. Detection Distance (~300m) | * 1,000 ft. Detection Distance (~300m) | ||
| - | * waterproof | + | * not waterproof! |
| * ~250€ | * ~250€ | ||
| + | * lensmaterial Chalcogenide | ||
| ==== Usage ==== | ==== Usage ==== | ||
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| Its visible, that thin plastics are a option. The actual thinnest one doesnt protect at all, its too thin. But maybe we can find some cheap fitting material, or we use the professional thermal plastics. | Its visible, that thin plastics are a option. The actual thinnest one doesnt protect at all, its too thin. But maybe we can find some cheap fitting material, or we use the professional thermal plastics. | ||
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| + | ===== Calibration ===== | ||
| + | |||
| + | * Images of water are more cold at center than edges | ||
| + | * Due to vignetting | ||
| + | * https://en.wikipedia.org/wiki/Vignetting | ||
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| + | * Flat field calibration | ||
| + | * Build avg frame over multiple frames and save flat_field_calib | ||
| + | * frame_corrected = frame_raw - flat_field_calib | ||
| + | * Implementation https://github.com/OpenThermal/libseek-thermal/blob/master/src/SeekCam.cpp#L101 | ||
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| + | ====== Low Light cameras ====== | ||
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| + | Camera | ||
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| + | https://shop.runcam.com/runcam-night-eagle-2-pro/ | ||
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| + | https://hackaday.com/2020/11/12/highly-sensitive-camera-makes-a-great-night-vision-scope/ | ||
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| + | http://www.watec-shop.com/en/products/monochrome-cameras.html | ||
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| + | Flight example | ||
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| + | https://www.youtube.com/watch?v=5Rqgn0WI1uo 85€ | ||
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| + | Grabber card | ||
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| + | https://www.linuxtv.org/wiki/index.php/Stk1160_based_USB_2.0_video_and_audio_capture_devices | ||
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