EventsIterator can not work rightly
Dear Community, I am working on a project involving an event camera and have created a Python class to manage it. One of the class attributes, self.cam, is an initialized HAL device. The class includes a method, continuous_acquire_events, designed to
Event Camera for Optical Communication
Has anyone used an Event Camera for optical communication? I would like to use and LED to transmit data that can be received with an event camera. Some scenarios include: 1) stationary transmitter 2) moving transmitter 3) multiple transmitters
Graphical User Interface for synchronized recording of Events and frames.
Hello everyone, I am currently working on a project in which a hardware trigger between the EVK 4 and an industrial camera is used to record events and images in a synchronized manner. The focus here is on ease of use. The aim is to create a GUI that
RotateEventsAlgorithm
Hello, Where can I get the description/example of this please?
Verifying the Output of Extrinsic Calibration
Hello, I follow the steps in this website https://docs.prophesee.ai/stable/samples/modules/calibration/ground_plane_calibration.html?highlight=calibration The output of the Position of the camera with regard to world coordinate frame gave me X: 0.62…
Real-Time Values to MATLAB
Hello, I am using metavision_generic_tracking and was planning to send the data of pixel location to another program, in this case MATLAB. I would like to know if there is like any plug-ins or extensions available, so that i can send the data in real
Dense Optical Flow Estimation - Speed Values
Hello, I am using the dense optical flow: code (https://docs.prophesee.ai/stable/samples/modules/cv/dense_flow_py.html) to estimate the speed and position of the water drops while spraying. I am using the triplet matching method. A part of the results
"Passthrough Not Supported, GL Disabled, ANGLE Error in Prophesee on Windows"
Bonjour Madame/Monsieur, I'm encountering an issue when running Prophesee on my Windows. The error message I receive is: ``` C:\Program Files\Prophesee>[11660:0516/100937.361:ERROR:gpu_init.cc(486)] Passthrough is not supported, GL is disabled, ANGLE
EVT3 NonMonotonicTimeHigh error happened
Hi All I'm trying to use four EVT3 in one PC. I use metavison studio version 4.5 to open four EVT3 camera. Sometimes it will occur NonMonotonicTimeHigh error, it happened randomly not always in the same camera. I found this document from prophesee website,
Using Prophesee camera for paint thickness estimation
Hello, I want to use the Prophesee camera, EVK4, for estimating the paint thickness while spraying. Is this possible to measure the size and velocity of the tiny paint particles using your camera? Is there any code or instruction that I can use? Thank
High latency in generating negative events
Hello, In an extremely dark environment, a laser creates a point light source on the IMX636 and moves at a constant speed. According to the imaging principle of an event-based camera, the time for the point light source to generate positive and negative
Video writing for spatter tracking
Hello, I am using the metavision_spatter_tracking.py code with these parameters: python metavision_spatter_tracking.py -i recording.raw --cell-width 7 --cell-height 7 --activation-ths 10 --accumulation-time-us 50 -f 3 -o video I want to save the video
Writing in a GENX320 register
Hi ! I'm trying to measure the quantum efficiency for GENX320. I'm trying to follow the same procedure as in the related article https://support.prophesee.ai/portal/en/kb/articles/qe-estimation As the article mentions, quantum efficiency can be determined
How do I output recorded events directly to a.CSV file instead of a.raw file
I'm using python. I saw the simple_recorder routine and the raw_to_csv routine in the python example. But I had a problem when I tried to combine the functionality of these two routines (to display camera contents through a window and output a csv file
When the camera is connected to the computer, the camera cannot be recognized (Windows)
Installation package version: 4.5 After the camera is connected to the computer, the device WestBridge can be found in the universal serial, but the camera cannot recognize it. What plugins do I need to install or do so that the camera can recognize it
Dataset Structure for YOLOv8 Training Issue:
I'm encountering problems while training a YOLOv8 model using a custom dataset structure. I've followed the steps outlined in Prophesee YOLOv8 tutorial and used the Prophesee ML labeling tool. I am getting the following error: ValueError: num_samples
Negative bias_diff_off and bias_diff_on values of IMX636. What do they mean?
I have set the following biases in the IMX636 Sensor. bias_diff_off = -10 and bias_diff_on = -50. I have read the documentation and would expect to get more OFF events with these settings. However I am getting more ON Events. Why is that? I am still not
Issue with Importing 'EventBbox' in Metavision SDK 4.1.0 While Using Machine Learning Labeling Tool
Hello, I am currently working with the Machine Learning Labeling Tool. While executing the 'label_tracking.py' file, I encountered an import error stating that 'EventBbox' could not be imported from 'metavision_sdk_ml'. Could you kindly assist me in resolving
Event rate plotting
Hello, I recently viewed the demo video on your website that showcases plotting the event rate alongside real-time video. You can reference the video at: https://youtu.be/fL_kOaDPzjQ. I've been trying to replicate this feature and was searching for the
Research papers
Hi, Does prophesee provide research papers with their algorithms? If yes, where can i find them? Kind regards, Rik van den Boogaard
How to record a raw file with external trigger events?
Hello, What is the correct procedure to record raw files with external trigger events? When I record raw files either with metavision_studio, metavision_viewer or metavision_player, the recorded .raw file contains no external trigger events, as reported
Low Light Bias setting
I am intending to collect recordings in low light conditions. I have played around with the bias settings and found that the following settings give me the best visuals: 299 % bias_diff 228 % bias_diff_off 370 % bias_diff_on 1650 % bias_fo 1525 % bias_hpf
3D visualization of the camera poses
Good morning, I'm working with Show Calibrated Pose after having calibrate my camera and I have a couple of questions: 1. I would as first notice that if I run show_calibrated_poses.py -e /path/intrinsics.json -m it returns an error Traceback (most recent
Is there sample code for vibration monitoring about amplitude?
Hello. I want to display vibration monitoring about amplitude at SilkyEvCam(VGA). I found vibration sample code "Vibration estimation". https://docs.prophesee.ai/stable/metavision_sdk/modules/analytics/samples/vibration.html#chapter-sdk-analytics-samples-vibration-estimation
moving between 2 targets
Hello, Using a GEN 3 EVK VGA CD and high speed mirror, we are tracking two objects at 200Hz. We use the trigger-in to mark the movement of the mirror. We try to use the triggers time information to sort the events between the two objects but we remain