you guys are not my political equals. i am vastly different in my disposition. that isn't what I'm here to discuss. I'm here for results against a surveillance state and to build a better future.
i am looking to build a low-cost sacrificial CMOS sensor test rig. interested in characterizing how permanent sensor degradation propagates through an image pipeline and eventually causes OCR failure. not primarily interested in temporary saturation/blinding. the question is where the functional threshold actually occurs after persistent sensor damage accumulates.
>Hardware
Raspberry Pi 4 as controller and replaceable CSI camera modules. IMX477 HQ Camera as primary test sensor IMX296 global-shutter comparison. IMX219 as cheap disposable baseline. interchangeable optics, fixed hardware and software baseline.
>Optical source
controlled, wavelength-defined laser source. output will be measured and recorded to construct a reproducible guide. fixed image sensor mounting and consistent exposure intensity and angling analagous to real world conditions. treat each camera module as a sacrificial test article. the goal is the destruction of optical recognition capabilities in a reproducible and on-the-go formula.
>Software
Raspberry Pi OS/libcamera OpenCV + NumPy Tesseract + PaddleOCR RAW + processed-frame capture automated OCR against a standardized text target
>Goal
log dead/stuck pixel count, persistent defect distribution saturation/clipping noise/SNR contrast and edge degradation OCR confidence character error rate / word error rate
>tl;dr
baseline sensor, controlled exposure, capture RAW + processed frame, run OCR, map persistent defects, repeat with fresh sensor
The interesting result is the curve:
sensor degradation → image-quality degradation → OCR error rate
rather than simply declaring the camera “dead” when OCR first fails.
Looking for recommendations on Pi-compatible sensors that would make useful analogues for higher-end commercial OCR/machine-vision cameras, particularly sensors with RAW access and well-documented characteristics.
not my problem
>>34213it is our collective problem. do you enjoy my language, comrade?
nice thesis idea but don't see what it has to do with anything
>>34217destruction of surveillance infrastructure and degradation of tracking capabilities on a local level. you aren't truly so ignorant, are you?
I'm in the process of moving out right now, but i will follow up as my research progresses. I don't intend to abandon this thread. i appreciate the site hosters for granting me the opportunity to post here.
why OCR in particular. just get rid of your car altogether. bike everywhere.
>>34222you need to kill yourself
>>34227i shan't.
>>34225goal will be to destroy legible identification of vehicle make and model as well as optical character recognition of plates. bicycle would also be identifiable in the machine.
>>34225supposedly the commercial alpr systems can identify tag, cosmetic damage, paint, make, model, and tie it to your travel around town.
>>34225pwning the ocr capabilities will be my primary focus oob
Just steal the cameras for testing if you are going to destroy them later anyway.
Modern cameras can take a welding arc and be without issue so the laser would need to have a car battery and a tripod hooked up to be effective in any good time. In case you did have a handheld laser that worked I don't think you'd avoid arrest for more than a week. You should give them for the homeless if you create one.
Tl;dr propably more effective climbing traffic lights with a ski mask
>>34247exactly the kind of brainstorming i love to hear. do you know if the cameras themselves have methods of asset protection? GPS or the like? do they have backup power. should i bring a farraday bag? matter of fact, I'll see if i can find a repair manual and see if that will answer my questions.
>>34247my goal was to make a easy to follow and implement guide / manual in the vein of laserhawk to distribute online, but i will reconsider that idea for the time being until i understand the failure threshold of the commercial devices.
>>34247I've been considering evasion. it's going to be the make out break part of implementing my plan. still mulling it over.