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- [common]
- ; Specify the path to the runtime data directory, bellow you can see how it is configured to the sample application
- runtime_dir = /data/data/be.henallux.myapplication/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
- ; Specifies the full path to an image file that constrains the detection area. Only the plate regions allowed through the mask
- ; will be analyzed. The mask image must match the resolution of your image to be analyzed. The mask is black and white.
- ; Black areas will be ignored, white areas will be searched. An empty value means no mask (scan the entire image)
- detection_mask_image =
- ; OpenALPR can scan the same image multiple times with different randomization. Setting this to a value larger than
- ; 1 may increase accuracy, but will increase processing time linearly (e.g., analysis_count = 3 is 3x slower)
- analysis_count = 1
- ; OpenALPR detects high-contrast plate crops and uses an alternative edge detection technique. Setting this to 0.0
- ; would classify ALL images as high-contrast, setting it to 1.0 would classify no images as high-contrast.
- contrast_detection_threshold = 0.3
- 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
- debug_general = 1
- debug_timing = 1
- debug_detector = 1
- debug_prewarp = 1
- debug_state_id = 1
- debug_plate_lines = 1
- debug_plate_corners = 1
- debug_char_segment = 1
- debug_char_analysis = 1
- debug_color_filter = 1
- debug_ocr = 1
- debug_postprocess = 1
- debug_show_images = 1
- debug_pause_on_frame = 1
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