95 lines
4.2 KiB
Plaintext
95 lines
4.2 KiB
Plaintext
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; Specify the path to the runtime data directory
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runtime_dir = ${CMAKE_INSTALL_PREFIX}/share/openalpr/runtime_data
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ocr_img_size_percent = 1.33333333
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state_id_img_size_percent = 2.0
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; Calibrating your camera improves detection accuracy in cases where vehicle plates are captured at a steep angle
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; Use the openalpr-utils-calibrate utility to calibrate your fixed camera to adjust for an angle
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; Once done, update the prewarp config with the values obtained from the tool
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prewarp =
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; detection will ignore plates that are too large. This is a good efficiency technique to use if the
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; plates are going to be a fixed distance away from the camera (e.g., you will never see plates that fill
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; up the entire image
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max_plate_width_percent = 100
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max_plate_height_percent = 100
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; detection_iteration_increase is the percentage that the LBP frame increases each iteration.
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; It must be greater than 1.0. A value of 1.01 means increase by 1%, 1.10 increases it by 10% each time.
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; So a 1% increase would be ~10x slower than 10% to process, but it has a higher chance of landing
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; directly on the plate and getting a strong detection
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detection_iteration_increase = 1.1
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; The minimum detection strength determines how sure the detection algorithm must be before signaling that
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; a plate region exists. Technically this corresponds to LBP nearest neighbors (e.g., how many detections
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; are clustered around the same area). For example, 2 = very lenient, 9 = very strict.
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detection_strictness = 3
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; The detection doesn't necessarily need an extremely high resolution image in order to detect plates
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; Using a smaller input image should still find the plates and will do it faster
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; Tweaking the max_detection_input values will resize the input image if it is larger than these sizes
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; max_detection_input_width/height are specified in pixels
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max_detection_input_width = 1280
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max_detection_input_height = 720
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; detector is the technique used to find license plate regions in an image. Value can be set to
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; lbpcpu - default LBP-based detector uses the system CPU
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; lbpgpu - LBP-based detector that uses Nvidia GPU to increase recognition speed.
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; lbpopencl - LBP-based detector that uses OpenCL GPU to increase recognition speed. Requires OpenCV 3.0
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; morphcpu - Experimental detector that detects white rectangles in an image. Does not require training.
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detector = lbpgpu
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; If set to true, all results must match a postprocess text pattern if a pattern is available.
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; If not, the result is disqualified.
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must_match_pattern = 0
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; Bypasses plate detection. If this is set to 1, the library assumes that each region provided is a likely plate area.
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skip_detection = 0
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; Specifies the full path to an image file that constrains the detection area. Only the plate regions allowed through the mask
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; will be analyzed. The mask image must match the resolution of your image to be analyzed. The mask is black and white.
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; Black areas will be ignored, white areas will be searched. An empty value means no mask (scan the entire image)
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detection_mask_image =
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; OpenALPR can scan the same image multiple times with different randomization. Setting this to a value larger than
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; 1 may increase accuracy, but will increase processing time linearly (e.g., analysis_count = 3 is 3x slower)
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analysis_count = 1
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; OpenALPR detects high-contrast plate crops and uses an alternative edge detection technique. Setting this to 0.0
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; would classify ALL images as high-contrast, setting it to 1.0 would classify no images as high-contrast.
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contrast_detection_threshold = 0.3
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max_plate_angle_degrees = 15
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ocr_min_font_point = 6
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; Minimum OCR confidence percent to consider.
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postprocess_min_confidence = 65
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; Any OCR character lower than this will also add an equally likely
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; chance that the character is incorrect and will be skipped. Value is a confidence percent
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postprocess_confidence_skip_level = 80
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debug_general = 0
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debug_timing = 0
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debug_detector = 0
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debug_prewarp = 0
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debug_state_id = 0
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debug_plate_lines = 0
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debug_plate_corners = 0
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debug_char_segment = 0
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debug_char_analysis = 0
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debug_color_filter = 0
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debug_ocr = 0
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debug_postprocess = 0
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debug_show_images = 0
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debug_pause_on_frame = 0
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