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Activity for KalleMP‭

Type On... Excerpt Status Date
Comment Post #280625 Additional to the ST products there is other activity. It looks like a company JointMicro has a product/sensor of some sort JM152A iToF. It also looks like a KickStarter that will make use of a Sony ToF sensor was well subscribed. Pledging a sum of HK$235 should get you a camera before year en...
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over 1 year ago
Comment Post #278415 I have a recollection that someone went and 3D printed a lens cap, check Thingiverse for projects and you may find a parametric file that can be adjusted to your diameter.
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almost 2 years ago
Comment Post #276535 I would opt for a Styrofoam cooler box with a plastic ruler along one side if you want a scale.
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almost 2 years ago
Comment Post #280323 You are limited in the amount of contrast you can achieve. To this end I would try and limit the surrounding image to have similar contrast to the subject I am interested in. So if you have a face you want to focus on you will want to preferentially only use tones that are in the face. If you have...
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almost 2 years ago
Edit Post #286459 Post edited:
almost 2 years ago
Edit Post #286459 Post edited:
almost 2 years ago
Edit Post #286459 Initial revision almost 2 years ago
Answer A: How much battery power does a GoPro 9 use in standby mode on a scheduled photo?
The good folk at CamDo have tabulated current consumption in older units. Power Consumption by GoPro Camera Model You can see the HERO9 battery life details at the listing at the GoPro Support knowledgebase between the two you may be able to extrapolate the consumption of expected standby tim...
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almost 2 years ago
Comment Post #277413 Also note that you will likely loose the muzzle flash as it will be fainter than your flash so you will need to add a somewhat longer exposure than the flash to capture more of the light from the flash. This you can experiment with without the high speed flash unit. There are various short durati...
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almost 2 years ago
Comment Post #285590 The best way to get the camera out of the loop is to simply set up your scene, check what settings the camera is suggesting and then set it to FULL manual and recreate the settings and see if it gives a reasonable picture. Use those same settings for all the comparison shots.
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almost 2 years ago
Comment Post #285590 Also depending on your locale a 'flashlight' is also commonly called a 'torch'.
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almost 2 years ago
Comment Post #280625 It seems that ST has also made more recent announcements of early prototypes for commercial implementation in consumer products. It does rather look like the technology is starting to mature. Below in an news report and a published paper that is presumed to relate to this technology. "ST Unveils ...
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almost 2 years ago
Comment Post #280625 A company imec has published a paper (behind a paywall) describing their developments in IR imaging that include ToF sensors. DOI:10.1117/12.2559949 - "Image sensors for low cost infrared imaging and 3D sensing" - Jiwon Lee, et.al. - 2020 https://www.semanticscholar.org/paper/Image-sensors-for-...
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almost 2 years ago
Comment Post #278418 Felt and baize are common components in camera cases and such. They should not outgas much.
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about 3 years ago
Comment Post #276518 Compare this with a picture taken in regular light, is the focus much better?
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about 3 years ago
Edit Post #280636 Initial revision about 3 years ago
Answer A: How to take 2 exact same photos, months apart
If your subjects are privy to what you are doing you could also add a large neutral grey board with a high contrast focus target at the same distance as your subjects that will be cut away from both images. In the position of the other party or out of scene if you have enough margin to crop the out...
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about 3 years ago
Comment Post #280323 I expect a moderate resolution image with low-pass filtering will produce the best results. The samples I have look much better when viewed from one side. I have not prepared any myself.
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about 3 years ago
Comment Post #280264 It will serve for the air-keyboard use case I mention in earlier comment but not for another fringe application that needs a 2D sensor system. I envisaged a sensor that would be able to detect the distance from hundreds of objects that are sensed at the other end of a optical fibre bundle. Basicall...
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about 3 years ago
Edit Post #280625 Initial revision about 3 years ago
Answer A: Are there consumer products using Time of Flight ranging camera technology?
I have located a source for a development system for the technology that I was seeking. It is not a mature consumer product yet but it looks like the technology has not been forgotten which gives me hope. A company Melexis has a camera system and LumiLEDs provides a high-frequency LED illuminator...
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about 3 years ago
Comment Post #280264 The first is a single pixel range finder that seems rather nice but not applicable a bit expensive for what you get but the system is configurable so that can be forgiven I suppose. The second unit is a 2D depth ranging system but is using a more conventional scanning laser but would provide the ...
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about 3 years ago
Comment Post #74993 I understand the old wet tech. I was interested in the new tech. Also this was a question I posted to fill the Q&A so a bit simple, If I had an actual need to know I would have searched myself. I saw some mention of zinc paper but it did not elaborate.
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over 3 years ago
Comment Post #74993 Not realy, that is how traditional instant works/ed. I am interested in the techniques that are not wet chemistry like https://www.youtube.com/watch?v=DAPwdsilcDg
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over 3 years ago
Comment Post #277254 That is pretty cool but not the technology I remember. It was intended to determine the range to an object from the time of flight for the return of a flash exposure. I think it used a very fast electronic shutter and then pulse delay and height detection on each pixel. I may be wrong but this oth...
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over 3 years ago
Comment Post #74994 @MattDM The idea was to use it as a HID to detect finger movement over a printed keyboard for instance where you cannot necessarily see the motion of the fingers if they lift and fall on the same key or how long they press down.
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over 3 years ago
Edit Post #74994 Initial revision almost 4 years ago
Question Are there consumer products using Time of Flight ranging camera technology?
There was some years ago announcements of new developments in cameras that were able to record the intensity and time lag of light that they detected to be able to view the range topology and reflectance of a target. Does anyone know if such camera technology has been commercialised yet?
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almost 4 years ago
Edit Post #74993 Initial revision almost 4 years ago
Question What technology do modern instant cameras use?
How are the modern instant camera technologies achieved? Is it pigment transfer, laser sensitized paper or what? Are they optical or digital technologies?
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almost 4 years ago