How to select event data format to generate on GENX320
Hello, I'm using GENX320 and I'd like to generate events in the EVT2.0 format instead of the default EVT 2.1 to use the evt to csv decoding functions from the sdk. I can't find this information on the datasheet and i can't change the data format on metavision
ESP for GenX320 CM2 for RaspberryPi5
I have the GenX320 CM2 connected to my RaspberryPi5 via MIPI. I have read in the docs that the GenX320 is supposed to support all Event Signal Processing (ESP) functionality. However, when trying to get the facilities for Anti-Flicker (AFK), Spatio-Temporal-Contrast
No monitor output after quickstart with IMX636 and kv260
I have set up the IMX636 with the kria board via usb (uart connection) and also it is conenct via ethernet to the router, not the laptop directly since I have no possibility to do this, nevertheless I can ssh into the device no issue or via serial interface.
Using IMX636 Metavision Starter Kit on KV260 Ubuntu
I have a project where we are trying to record with multiple cameras, including the IMX636 Metavision Starter Kit for the Kria KV260 board. The other cameras have been implemented on the Kria KV260 board, but with the Ubuntu image installed on it. We
Reconstructing Boot Sequence for GENX320
Dear Community, i am trying to use the GENX320 starter Kit on an FPGA, which is why I want to re-construct the boot-up sequence for the MIPI EVT2.1 stream using I2C from the 15-pin adapter. I tried to copy the signals from the Linux drivers (https://github.com/prophesee-ai/linux-sensor-drivers),
Separting the sensor module from the CCAM adapter
I need to mount the EVK3 (VGA) sensor to a cage-mount system. The simplest way I can think of to do this is to separate the sensor and the CCAM adapter board and connect them with a flexible cable. Does any such cable exist?
Setting a ROI on GENX320MP and masking the hot pixels in that ROI
Hi, I am trying to to mask some hot pixels in a given ROI on the GENX320 MP. I looked at this page : https://support.prophesee.ai/portal/en/kb/articles/how-to-mask-the-effect-of-crazy-hot-pixel I have the coordinates of the pixels i'd like to mask. But
What are rows in the pixels architecture
In the Youtube video found on the Event-Based Concepts, it is mentioned that all pixels from the same rows are read simultaneously and their corresponding events will share the same timestamp. I have an EVK4 (IMX636) and the datasheet says the sensor
Licensing T&C's for Kria embedded kit
Hello, I have already put in a support ticket regarding the following. I believe that the licensing T&C's are vague when it comes to demonstration purposes. If I create a binary based on a derivative of the embedded marker application code, how would
EVT2.1 format problem in FPGA signal capture
Hi, I am using a Kria kv260 setup with an imx636 camera, and I am visualizing the active marker with the /opt/metavision/embedded_active_marker_3d_tracking app. Marker position is smoothly displays on the screen, proof that signal from sensor is correctly
How to program on GenX320 built-in risc-v cores?
Hi, I saw it is possible to flash firmware to the sensor during runtime from GenX320_STM32_V2.0.0 sample code, like `fw_led_tracking` and `fw_esp_wakeup`. Is there any documentation about this feature, which operations are support and how to transfer
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`
Timestamp Jitter Range
Hi, I came across this website: https://support.prophesee.ai/portal/en/kb/articles/evk-latency. It mentions jitter and latency here. The latency is clearly mentioned for IMX636; however, I didn't find any measurement about the jitter time. May I ask what
GenX320 on KV260 boot magic number not found
Hello, I am trying to get the GenX320 camera base project working on a KV260 board, using the provided Petalinux image and simply following the instructions in https://docs.prophesee.ai/amd-kria-starter-kit/application/pipeline_setup.html . However, when
Frequency / bias value matching table
Hi, I just found this table that relates bias_hpf and bias_fo in terms of high-pass cut-off frequency and Low-pass cut-off frequency but this is for GEN 3.1. Can you please share the table or the graphs (https://support.prophesee.ai/portal/en/kb/articles/bias-tuning-flow)
Impact of 10Hz Sync Signal on EVK4 + RGB Camera Synchronization Precision
Hello Prophesee Team, We are currently developing a multi-sensor data acquisition system using the Prophesee EVK4 alongside a standard RGB camera, and we require precise time synchronization between them. I have carefully reviewed the official synchronization
IMX636 internal clock PPM
Hello, I am trying to find information about expected internal clock accuracy as PPM compared to the "perfect" clock. online sources give average "Standard Crystal Oscillators" somewhere around 20 PPM, which means around 12 seconds drift per week. Does
Saving the results of the generic tracking sample to a numpy file
I'm attempting to adapt the generic tracking script to allow me to save the data in a numpy file, however, whenever I inspect the data, the timestamps when grouped by object_id are exactly the same for each object. That is, object 10 will always have
Efficiently replaying sync data from sync camera
Dear community, Thank you for reading. I am currently working with two EVK4 camera synchronized with the sync module of the SDK. I recorded some synchronized raw and I wanted to play it back real-time, and still synchronized. I cannot use the sync module
Interfacing Prophesee USB EVK with RT Linux CRIO
Is it possible to use a USB EVK* with Linux based NI cRIO? Ideally I would like to get an event stream in my control hardware -a National Instruments cRIO9049. The cRIO uses Linux RT -not ubuntu- and I am not sure if there is a simple way of doing t
Extrinsic Calibration Reference Point
Hello everyone, I am currently performing an extrinsic calibration with the EVK4 HD and would like to validate the results of my translation. I have already been able to measure the X (horizontal) and Y (vertical) directions in a CAD model or directly
KV260 GenX320 to Raspberry Pi connection
Can we use the KV260 – GenX320 starter kit directly on a Raspberry Pi using an official Raspberry Pi standard-to-mini camera cable? Thank you very much for your answer !
EVT2.1 format
Hello, I'm trying to understand how the EVT 2.1 format works on GENX320. In order to do so, I generated 2 light edges (positive then negative) with a contrast well above the threshold value. The generated .RAW file should contain data with a sequence
Camera not detected in Metavision Starter kit KV260 (IMX636)
Dear Prophesee Support Team, I am working with the Prophesee Metavision Starter Kit for AMD Kria KV260 and followed the instructions provided in the Quick Start Guide. After flashing the SD card and booting the board, I attempted to launch Metavision
The specific value of the refractory period
Hello, I would like to know what is the refractory period in microseconds for the IMX636 version of EVK3 when the bias parameter is set to the default value.
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
About the temporal resolution of IMX636
I am currently using a high-speed projector with a minimum exposure time of 105 microseconds per frame.In my experiment, I project alternating all-white and all-black patterns continuously, with each frame having an exposure time of 105 µs. Under this
How the Reference Intensity Is Chosen After and Event Detection and On Start Up
Hello everyone, I recently had some questions regarding the nature of the reference intensity for event detections, specifically how the reference intensity is chosen following an event detection and how it is chosen after a camera is started. I couldn't
USB and MIPI camera different bias defaults and ranges
I am seeing different default bias values and allowable ranges between the MIPI and USB versions of the IMX636. The following figure are the bias values that are found in this article as well as through testing on the Metavision Studio application. For
Uncertainty in lux measurement from .get_illumination()?
Greetings, I was wondering if uncertainty in the lux measurement returned by `.get_illumination()` was known? Thank you.
IMX636 Bias Values for Automotive Driving Scences
Hello, I am planning to use the EVK4 with the IMX636 sensor in recording of an automotive dataset. Are there any existing experiences or recommendations regarding bias adjustment for driving scenes or outdoor environments? If not, what would be the best
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
About the IMX636 bias
I noticed in the documentation that for the IMX636 model, only bias_diff_on/off has an effect on its sensitivity. But in my tests, I found that bias_diff also had an impact. I want to know what the details should be.
The exact threshold value of IMX636
I am currently utilizing the imx636 sensor for my research.To proceed with my work, I need to determine the exact threshold value rather than the bias parameter. How could I get this information？
event camera noise
Hello, I have an EVK3-IMX636 camera, and my observation scenario involves detecting faint spatial targets in dark space. I would like to inquire about how to configure the camera so that it outputs as many events as possible generated by the sensor, without
Spectral response curve for EVK4
Hello, I am trying to measure and verify the response probability S curve of the EVK4 camera. But I cannot find the quantum efficiency or detailed spectral response curve for the sensor in the preliminary datasheet. Only found a table with several wavelengths
EVK4 Camera data transfer
The EVK4 camera with an USB3 cable is rated for hundreds of MB/s of data transfer; however, when running the EVK4 camera in a rapidly changing environment (where almost all pixels across the camera's resolution are changing) for around 10 seconds, an
Expected response for large intensity changes
Hello, I have a question regarding the expected response from the event camera pixels for very large intensity changes. The working principle of event cameras is that the if the long contrast between the intensity levels exceeds a certain threshold (determined
Some questions about positive events and negative events
I have an EVK4 device, when I use python's EventsIterator to read the events generated by the device, the delta_t is 10ms, and other parameters are the default values, but I found that when the brightness of the picture captured by the event camera does
Details about internal circuits
To facilitate my research, I would like to understand the general logic of the integrated circuit inside a sensor or schematic diagram. Where could I obtain these materials？And my sensor is IMX636.
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