Uk Plates, missing number
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stevenjoh...@gmail.com
Nov 22, 2015, 11:15:01 AM11/22/15
to OpenALPR
HI all,
I am using openalpr to open my gate, but curiously, this plate is not picking up the number 2, any idea why?
| R5GNH |
| R54GNH |
| R54GNH |
| R54GNH |
| R54GNH |
| R54GNH |
| 54GNH |
Cheers
Steve
Vladimir Radnovic
Nov 27, 2015, 2:13:50 PM11/27/15
to OpenALPR
Steve, u mast to make better UK OCR libery and it will better
what u make in config file ? can u post here ?
Mark Bissell
Nov 28, 2015, 10:12:44 AM11/28/15
to OpenALPR
Valdimar,
Hi do you mean in the alprd.conf eg
daemon]
; country determines the training dataset used for recognizing plates. Valid values are: us, eu
country = us
Due to gb now being supported, can the country in the conf file can now be gb ?
country = gb
please confirm
Thanks
st...@frostfields.com
Nov 28, 2015, 2:30:59 PM11/28/15
to Openalpr
Yes you can use gb in alprd.conf
I also have this in the other .conf
; Specify the path to the runtime data directory
runtime_dir = /usr/share/openalpr/runtime_data
ocr_img_size_percent = 1.33333333
state_id_img_size_percent = 2.0
; Calibrating your camera improves detection accuracy in cases where vehicle plates are captured at a steep angle
; Use the openalpr-utils-calibrate utility to calibrate your fixed camera to adjust for an angle
; Once done, update the prewarp config with the values obtained from the tool
prewarp =
; detection will ignore plates that are too large. This is a good efficiency technique to use if the
; plates are going to be a fixed distance away from the camera (e.g., you will never see plates that fill
; up the entire image
max_plate_width_percent = 100
max_plate_height_percent = 100
; detection_iteration_increase is the percentage that the LBP frame increases each iteration.
; It must be greater than 1.0. A value of 1.01 means increase by 1%, 1.10 increases it by 10% each time.
; So a 1% increase would be ~10x slower than 10% to process, but it has a higher chance of landing
; directly on the plate and getting a strong detection
detection_iteration_increase = 1.1
; The minimum detection strength determines how sure the detection algorithm must be before signaling that
; a plate region exists. Technically this corresponds to LBP nearest neighbors (e.g., how many detections
; are clustered around the same area). For example, 2 = very lenient, 9 = very strict.
detection_strictness = 3
; The detection doesn't necessarily need an extremely high resolution image in order to detect plates
; Using a smaller input image should still find the plates and will do it faster
; Tweaking the max_detection_input values will resize the input image if it is larger than these sizes
; max_detection_input_width/height are specified in pixels
max_detection_input_width = 1280
max_detection_input_height = 720
; detector is the technique used to find license plate regions in an image. Value can be set to
; lbpcpu - default LBP-based detector uses the system CPU
; lbpgpu - LBP-based detector that uses Nvidia GPU to increase recognition speed.
; lbpopencl - LBP-based detector that uses OpenCL GPU to increase recognition speed. Requires OpenCV 3.0
; morphcpu - Experimental detector that detects white rectangles in an image. Does not require training.
detector = lbpcpu
; If set to true, all results must match a postprocess text pattern if a pattern is available.
; If not, the result is disqualified.
must_match_pattern = 0
; Bypasses plate detection. If this is set to 1, the library assumes that each region provided is a likely plate area.
skip_detection = 0
max_plate_angle_degrees = 15
ocr_min_font_point = 6
; Minimum OCR confidence percent to consider.
postprocess_min_confidence = 65
; Any OCR character lower than this will also add an equally likely
; chance that the character is incorrect and will be skipped. Value is a confidence percent
postprocess_confidence_skip_level = 80
Cheers
Steve
Sent from my iPad Air 2
I also have this in the other .conf
; Specify the path to the runtime data directory
runtime_dir = /usr/share/openalpr/runtime_data
ocr_img_size_percent = 1.33333333
state_id_img_size_percent = 2.0
; Calibrating your camera improves detection accuracy in cases where vehicle plates are captured at a steep angle
; Use the openalpr-utils-calibrate utility to calibrate your fixed camera to adjust for an angle
; Once done, update the prewarp config with the values obtained from the tool
prewarp =
; detection will ignore plates that are too large. This is a good efficiency technique to use if the
; plates are going to be a fixed distance away from the camera (e.g., you will never see plates that fill
; up the entire image
max_plate_width_percent = 100
max_plate_height_percent = 100
; detection_iteration_increase is the percentage that the LBP frame increases each iteration.
; It must be greater than 1.0. A value of 1.01 means increase by 1%, 1.10 increases it by 10% each time.
; So a 1% increase would be ~10x slower than 10% to process, but it has a higher chance of landing
; directly on the plate and getting a strong detection
detection_iteration_increase = 1.1
; The minimum detection strength determines how sure the detection algorithm must be before signaling that
; a plate region exists. Technically this corresponds to LBP nearest neighbors (e.g., how many detections
; are clustered around the same area). For example, 2 = very lenient, 9 = very strict.
detection_strictness = 3
; The detection doesn't necessarily need an extremely high resolution image in order to detect plates
; Using a smaller input image should still find the plates and will do it faster
; Tweaking the max_detection_input values will resize the input image if it is larger than these sizes
; max_detection_input_width/height are specified in pixels
max_detection_input_width = 1280
max_detection_input_height = 720
; detector is the technique used to find license plate regions in an image. Value can be set to
; lbpcpu - default LBP-based detector uses the system CPU
; lbpgpu - LBP-based detector that uses Nvidia GPU to increase recognition speed.
; lbpopencl - LBP-based detector that uses OpenCL GPU to increase recognition speed. Requires OpenCV 3.0
; morphcpu - Experimental detector that detects white rectangles in an image. Does not require training.
detector = lbpcpu
; If set to true, all results must match a postprocess text pattern if a pattern is available.
; If not, the result is disqualified.
must_match_pattern = 0
; Bypasses plate detection. If this is set to 1, the library assumes that each region provided is a likely plate area.
skip_detection = 0
max_plate_angle_degrees = 15
ocr_min_font_point = 6
; Minimum OCR confidence percent to consider.
postprocess_min_confidence = 65
; Any OCR character lower than this will also add an equally likely
; chance that the character is incorrect and will be skipped. Value is a confidence percent
postprocess_confidence_skip_level = 80
Cheers
Steve
Sent from my iPad Air 2
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Sent from my iPad Air 2
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Mark Bissell
Nov 28, 2015, 3:55:08 PM11/28/15
to OpenALPR
Cheers Steve
Vladimir Radnovic
Nov 28, 2015, 4:19:35 PM11/28/15
to OpenALPR
Like Steve say... tray and u will get better resulets...
On Saturday, 28 November 2015 21:55:08 UTC+1, Mark Bissell wrote:
On Saturday, 28 November 2015 21:55:08 UTC+1, Mark Bissell wrote:
Cheers Steve
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