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Enahncing Image to identify Vehicle Plate number
Have a set of images from an AVI capture, looking for software suggestions that could process the image enhancing a selection.
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As Dan says, not an easy job.
In my experience in ITS, even dedicated HD cameras used for identifying commercial vehicles at weigh stations have difficulty accomplishing this automatically using OCR.
The 407 Express Toll Route, in Ontario (Canada), uses students to read the plates of vehicles the cameras can't read.
But these images are easier to enhance!
In my experience in ITS, even dedicated HD cameras used for identifying commercial vehicles at weigh stations have difficulty accomplishing this automatically using OCR.
The 407 Express Toll Route, in Ontario (Canada), uses students to read the plates of vehicles the cameras can't read.
But these images are easier to enhance!
Thanks for the input.
It is from an in vehicle type camera
The angle of view distorts the image somewhat (or my sight is not what it used to be), was looking for some contrast adjustment/extrapolated that could make it somewhat easier to read/guestimate. the number is a 3alpha-4 numeric
I think the first three are 'visible" the last two are as "well". Need to see whether ........
Used VLC,Irfanview, and other open source to grab a snapshot/frame from the AVI.
grabbing the section of interest, but the options/filters available and my guessing on which filters to apply, does not improve/help.
The angle where one sees the least distortion is between 25°-35° from driver side centered at the center of the vehicle
The vehicle passing on the left side.
Seen newer HD PTZ cameras that have a 1:10000 optical zoom, that can be programmed to focus/zoom in on items of interest, not an available option in the device in use.
It is from an in vehicle type camera
The angle of view distorts the image somewhat (or my sight is not what it used to be), was looking for some contrast adjustment/extrapolated that could make it somewhat easier to read/guestimate. the number is a 3alpha-4 numeric
I think the first three are 'visible" the last two are as "well". Need to see whether ........
Used VLC,Irfanview, and other open source to grab a snapshot/frame from the AVI.
grabbing the section of interest, but the options/filters available and my guessing on which filters to apply, does not improve/help.
The angle where one sees the least distortion is between 25°-35° from driver side centered at the center of the vehicle
The vehicle passing on the left side.
Seen newer HD PTZ cameras that have a 1:10000 optical zoom, that can be programmed to focus/zoom in on items of interest, not an available option in the device in use.
could you attach one Arnold.
What I would try first is using windows photo viewer zoom in then snip it close up then use my image editor to clear it if possible.
Windows photo viewer is part of Microsoft Essentials free. It includes Photo Gallery
http://windows.microsoft.com/en-AU/windows7/products/features/photo-gallery
http://windows.microsoft.com/en-au/windows-live/essentials
What I would try first is using windows photo viewer zoom in then snip it close up then use my image editor to clear it if possible.
Windows photo viewer is part of Microsoft Essentials free. It includes Photo Gallery
http://windows.microsoft.com/en-AU/windows7/products/features/photo-gallery
http://windows.microsoft.com/en-au/windows-live/essentials
I did, but the angle of the view when it is largest.
I tried, but the tools I mentioned the image distorts. Tied the brightness/contrast..
I can, what format bmp, jpg, png, tiff is preferable? I'll post the snippet of interest only.
I tried, but the tools I mentioned the image distorts. Tied the brightness/contrast..
I can, what format bmp, jpg, png, tiff is preferable? I'll post the snippet of interest only.
EE supports all of them Arnold. use the attach file so it's not visible here.
http://support.experts-exchange.com/customer/portal/articles/1543644-attachments-allowed-extensions
Could be snap taken from a paused video might not be that clear. Does it have motion blur?
So you did try VLC snapshot
you can also use the windows snipping tool with a full screen video playback
choose a section/region by putting the curser in a rectangle around the area you want then save the snip
VLC has some advanced settings while your video is paused you can adjust the motion blur.
Th better the screenshot the better chances
cheers
http://support.experts-exchange.com/customer/portal/articles/1543644-attachments-allowed-extensions
Could be snap taken from a paused video might not be that clear. Does it have motion blur?
So you did try VLC snapshot
you can also use the windows snipping tool with a full screen video playback
choose a section/region by putting the curser in a rectangle around the area you want then save the snip
VLC has some advanced settings while your video is paused you can adjust the motion blur.
Th better the screenshot the better chances
cheers
Thanks for the response, attaching five images at different distances from closest to farther.
Did not imbed the image for display.
vlcsnap-6309-12-22-09h34m16s037.png
vlcsnap-6501-12-11-18h51m15s370.png
vlcsnap-2099-09-24-10h15m08s876.png
vlcsnap-8138-09-21-03h04m20s109.png
vlcsnap-0940-11-11-07h28m57s929.png
Did not imbed the image for display.
vlcsnap-6309-12-22-09h34m16s037.png
vlcsnap-6501-12-11-18h51m15s370.png
vlcsnap-2099-09-24-10h15m08s876.png
vlcsnap-8138-09-21-03h04m20s109.png
vlcsnap-0940-11-11-07h28m57s929.png
Thanks Arnold, I cannot rebuild the number plates the image are too pixelated.
because the original image is from a video and when the video scale is small from that video will obviously produce a small scale image, when blown up or zoomed in will distort and break up.
Therefor the snapshot cannot zoom in on the video scale currently being played.
There is a few instructions on the web where the repeated use of gaussian blur and sharpening produce good results as illustrated here, but your image is not from photo taken with a shake but from a video.
http://www.howtogeek.com/105952/3-simple-ways-to-improve-low-resolution-images-and-typography/
If you like to understand the process using scripts
RESTORATION OF DEFOCUSED AND BLURRED IMAGES
http://yuzhikov.com/articles/BlurredImagesRestoration1.htm
because the original image is from a video and when the video scale is small from that video will obviously produce a small scale image, when blown up or zoomed in will distort and break up.
Therefor the snapshot cannot zoom in on the video scale currently being played.
There is a few instructions on the web where the repeated use of gaussian blur and sharpening produce good results as illustrated here, but your image is not from photo taken with a shake but from a video.
http://www.howtogeek.com/105952/3-simple-ways-to-improve-low-resolution-images-and-typography/
If you like to understand the process using scripts
RESTORATION OF DEFOCUSED AND BLURRED IMAGES
http://yuzhikov.com/articles/BlurredImagesRestoration1.htm
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If the plate number is 10x5 pixels, there is not enough information there to extrapolate.
I know Hollywood movies show images magically becoming crystal clear, but that's a myth: if the information in the original image is insufficient, no amount of processing will give you the missing data.
HTH,
Dan