Prebuilt metavision_dense_optical_flow.exe (Metavision 4.6.2, Win11)
Hello, I am trying to launch the prebuild metavision_dense_optical_flow.exe c++ example binary on the win11 Metavision v4.6.2 In the terminal it prints: Instantiating TripletMatchingFlowAlgorithm with radius= 1.5 then gui window is showed and quickly
Missing images in dataset structure for training YOLOV8 model
Hi, I have the following structure for my dataset to train a yolov8 model according to the documentation but I am getting the error: "AssertionError: train: No images found in /home/allen/code/proheese-camera/train_classification_model/train. Supported
RAM usage builds up when EVK4 captures high event rates
Greetings! When building a recording Application I noticed that while the EVK4 is facing conditions which result in a high event rates being captured, the system memory, or RAM that is used by the application is constantly increasing, but not decreasing
kv260 + IMX636 not reading any event?
Dear Prophesee community, I have been doing extensive tests (a lot of try and error) in order to setup my kv260 with the imx636 following line by line the quickstart guide... everythin' seems fine but when metavision_viewer is launched the screen is black
eb-synced-pattern-detection not working in calibration pipeline
Hi, I am trying to calibrate two event cameras to perform depth mapping through a stereo setup. I am passing in my own calibration.json file to the metavision_calibration_pipeline script to extract the intrinsics and extrinsics parameters of each camera.
Having missing events in the images.
Hi PROPHESEE Support, So i got two problems, the first one is when i use the prophesee_ros_viewer.cpp from the prophesee_ros_wrapper(https://github.com/prophesee-ai/prophesee_ros_wrapper), sometimes i get blank lines in the middle of the image, see the
Readout Saturation Error - Events Flashing Spontaneously
Hi, I'm currently using the EVK4 Prophesee event camera, and am recording events via ros2 subscription into a rosbag recording. When I try to replay my recording, I notice that spontaneously (for different durations too), the events on the screen appear
Burst of negative event noise on startup
I have a custom setup where I am using a microcontroller to capture event data from the IMX636 via MIPI CSI; I've gotten to a point where data is captured reliably and efficiently. I've noticed that when I first initialize the camera and begin recording
Stereo Calibration Depth Mapping
Hi, I am trying to use the metavision_stereo_metavision.py script to create a depth map using two syncronized recordings obtained from the metavision_sync.py script but when I run the script I get a lot of NonMontonicTimeHigh and InvalidVectBase errors
Error modifying Metavision recipe
Hi! First, I wanted to point out a minor error in the KV260 Starter Kit Manual. In "Edit kria applications", the suggested command is petalinux-devtool modify metavision_x.x.x. However, petalinux-devtool modify takes the root recipe, without the version.
Metavision HAL Exception Error 105000:
Greetings! I wrote an application to configure and record Eventcameras. In this setup we are using an EVK4 with IMX636. When changing the bias_diff_off to over around 120 the camera loses its connection and an Metavision HAL Exception Error 105000: is
Bad x320 firmware? Driver development for Raspberry Pis
After a few weeks of playing around, our Genx320 can talk over i2c to a Raspberry Pi 5, but apparently not over MIPI/CSI2. This involved creating a device tree overlay, modifying the Linux drivers open sourced by Prophesee, patching v4l2 utils, compiling
x320 writes bad data to file?
With a x320 ES (which doesn't support the EVT3 format), a patched OpenEB (to support v4l2 devices) can only write raw files of collected data -- hdf5 files open then almost instantly close without any errors. If I convert the raw files to hdf5 with `metavision_file_to_hdf5`
Serial Number Write Failed
We have four EVK3 gen 4.1 cameras that have serial numbers: "ffffffff" for all four cameras and would like them to be unique. Below is what all four cameras display when using the metavision_platform_info command: ## Prophesee Gen4.1 HD ## # System information
MVTec HALCON Cannot Recognize Evk4 Camera
I follow the guidence https://support.prophesee.ai/portal/en/kb/articles/mvtec-halcon-acquisition-interface#Installation, but it still cannot recognize the camera. In particular, I am confused about the specific implementation of the interface installation
Raw data capture in KV260-IMX636 sensor not decoding with metavision-viewer
Hi, We have imx636 mipi event camera sensor running in KV260 board and it is running with metavision_viewer app. But when we replay the raw data captured with metavision_viewer app, first it is not able to decode. Throws missing format error. Next added
EVK1 VGA is not seen by metavision studio 3.1
I have EVK1 VGA camera, one of the old ones, I also installed metaviison_sdk 3.1 beucase it is latest version that supports that cameras, but when I click open camera i get only "No Prophesee cameras available, please check that a camera is connected
Possible acquisition problems with stripes and misalignment
Hello everyone, I've been experiencing some strange behavior with the visualization of events. The sensor model is EVK4. I have two devices, and both exhibit the same behavior. Specifically, I notice several shifted bands across the image, almost as if
Meta studio keeps a blank tab in front of the camera livestream
Whenever I try to use metavision studio with the EVK4 camera, the tab shown in the figure stays in front of the main interface, even when I try to minimize it most of the time. Sometimes minimizing works but even then I am unable to use any of the buttons
get_pixel_dead_time() erroring out on Gen4.1 EVK3-HD
I get the following error when trying to get pixel dead time for my EVK3-HD Gen4.1: Metavision HAL exception Error 104000. Has anyone experienced this or alternatively knows the dead time with default parameters?
Inference Pipeline of Detection and Tracking using C++ not working when using live camera
I tried running the C++ detection and tracking sample as described here while using the live camera instead of a prerecorded file, but the camera doesn't seem to detect or classify any moving vehicles or pedestrians. I will only see bounding boxes get
fisheye lens for EVK4 camera
Hi, We have procured a EVK4 camera. We were looking for fish eye lens that is compatible with EVK camera. Can you please recommend/suggest few of them.
[SDK][ERROR] 0:1(10): error: GLSL ES 3.10 is not supported.
I am trying to run the metavision_sparse_optical_flow.py example script in linux on a .raw file I have collected. When I try to run the example, I get the following error messages. Online I found a recommendation to use "export MESA_GL_VERSION_OVERRIDE=3.3"
HDF5 & Raw file play time differnece
If I "simply" convert the Raw file into an HDF5 file without any cutting and turn these two on with the metavision player, I could see that the "total playtime" changes, and the "position of objects in both files at the same time zone" changes as in the
Start/stop recording in same session: Different video lengths
Dear all, I am trying to acquire and store different videos in the same session. I was finally able to do it by using the RawReader class instead of the EventIterator, and with a proper order in the device.get_i_events_stream() function calls. If I run
Using OpenEB on Raspberry Pi 5
Hello, i'm running into a problem when trying to use the EVK3 on my Raspberry Pi 5. I compiled from source and even used ctest to verify the functionality. But when i try to launch for example metavision_viewer i get the following error: [HAL][ERROR]
How to use I_ROI in python I am trying to do some blob detection and then use that to set I_ROI.
Can you help me with this approach and code.
Sample not running in new version
Hello, With the new release Metavision SDK (4.6) I am unable to open samples (ex. metavision_time_surface.py). But with version 4.53 there is no problem. The following error is shown: ImportError: DLL load failed while importing _errors: The specified
"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
Flickering bars on event stream
I have a Prophesee EVK4 camera and I'm noticing a strange occurrence when attempting to record a stream with the camera face down. There is constant bar flickering across the stream. Most other orientations are completely fine; it only falls apart with
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,
ColorPalette in metavision_simple_viewer.py
Hi, All! When I change ColorPalette in metavision_simple_viewer.py I get these error: Code lines 55, 56: As the same time ColorPalette with Light, Dark and CoolWarm is working. How can I manage with this error? Best Regards, Rafael.
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
Issue with Converting Recordings to HDF in Metavision Studio
Hello I have encountered an issue while using Metavision Studio to convert a series of video recordings into HDF files. Specifically, when attempting the conversion process, some of the videos fail and prompt an error message related to the chronological
Error when installing extra libraries
I am re installing the whole metavision SDK and i am checking all the extra libraries are installed. When i run this command: python -m pip install "opencv-python==4.5.5.64" "sk-video==1.1.10" "fire==0.4.0" "numpy==1.23.4" "h5py==3.7.0" pandas scipy the
How to calibrate?
Hey, How to use the calibration command? I am using this command with `metavision_mono_calibration_recording` the checkerboard html blinking on my iPad. The right side window (black screen) of the application is empty. I am not even seeing any pattern
Could not find a configuration file for package "MetavisionSDK"
When compiling the C++ “sample metavision_sdk_get_started.cpp” with the cmake command, the following error occurs: ------------------------------------------------------------------------------------------------------------- -- Selecting Windows SDK version
How to read camera data using fpga
We hope to use fpga to read the camera data instead of SDK. Is there any relevant information or documentation？
Getting GPU device error when running the detection pipeline
Hi team, I am trying to run the detection pipeline on my system. The command i am entering is python3 sdk/ml/python_samples/detection_and_tracking_pipeline/detection_and_tracking_pipeline.py --object_detector_dir ~/Documents/pre-trained_models/metavision_sdk_3.x/red_event_cube_05_2020/
No plugin found error on Jetson orin nano
Hi, I sussessfully compiled OPENEB-4.3.0 on my Jetson Orin Nano ( arm64 coretex, Ubuntu 20.4 ), and I lunched 'metavision_viewer' from the 'build' fowder. And I plugged EVK3 to my Jetson, but there comes the warning: 'no plugin found' and 'Metavision
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