c++ - How can i programaticaly identify altered frames from a video -

c++ - How can i programaticaly identify altered frames from a video -

a video can edit deleting frames it.that can done deleting consecutive frames or random frames in video.

we need observe tampered videos, hope detecting frames has been altered , need have algorithm way identify deleted frames.because creating tool utilize tamper detection video surveillance tool.which utilize in law enforcements , courts

is there method identify frames of video has been deleted malicious attacks, there available methods such watermarking, digital signature, need algorithm observe frames using proper algorithm.

in general, whatever image sequence handed, or of have come real camera, photoshop or 3d renderer, , there no general purpose image processing technique able tell difference based on analysis of image content alone, either plenty stand in court, or, indeed, @ all.

you'll need embed easy recognise yet hard fake, relocate or tamper signal video @ recording time. you've tagged question "opencv", fields want investigate cryptography , watermarking, not computer vision.

have video surveillance equipment utilize public key crypto visibly watermark each frame identifier unique piece of equipment, timestamp, frame sequence number , hash or other suitable function of frame image, using scheme robust compression.

tampering video sequence require either knowledge of device's private key, or removal of watermark. isn't great (keeping private key secret logistical headache) best solution can get.

c++ c opencv image-processing cryptography