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Add an example for parsing GS1 Application Identifiers
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‎examples/official/gs1ai/GS1AI_Scanner.json

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{
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"BarcodeReaderTaskSettingOptions": [
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{
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"Name": "task_gs1_ai_barcode",
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"ExpectedBarcodesCount": 1,
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"BarcodeFormatIds": [
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"BF_DEFAULT"
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],
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"SectionArray": [
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{
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"Section": "ST_REGION_PREDETECTION",
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"ImageParameterName": "ip_localize_barcode",
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"StageArray": [
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{
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"Stage": "SST_PREDETECT_REGIONS"
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}
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]
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},
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{
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"Section": "ST_BARCODE_LOCALIZATION",
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"ImageParameterName": "ip_localize_barcode",
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"StageArray": [
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{
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"Stage": "SST_LOCALIZE_CANDIDATE_BARCODES"
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},
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{
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"Stage": "SST_LOCALIZE_BARCODES"
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}
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]
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},
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{
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"Section": "ST_BARCODE_DECODING",
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"ImageParameterName": "ip_decode_barcode",
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"StageArray": [
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{
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"Stage": "SST_RESIST_DEFORMATION"
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},
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{
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"Stage": "SST_COMPLEMENT_BARCODE"
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},
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{
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"Stage": "SST_SCALE_BARCODE_IMAGE"
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},
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{
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"Stage": "SST_DECODE_BARCODES"
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}
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]
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}
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]
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}
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],
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"CaptureVisionTemplates": [
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{
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"Name": "ReadGS1AIBarcode",
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"ImageROIProcessingNameArray": [
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"roi_gs1_ai_barcode"
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],
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"SemanticProcessingNameArray": [
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"sp_gs1_ai"
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]
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}
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],
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"ImageParameterOptions": [
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{
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"Name": "ip_localize_barcode",
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"ApplicableStages": [
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{
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"Stage": "SST_BINARIZE_IMAGE",
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"BinarizationModes": [
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{
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"Mode": "BM_LOCAL_BLOCK"
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}
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]
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},
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{
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"Stage": "SST_BINARIZE_TEXTURE_REMOVED_GRAYSCALE"
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},
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{
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"Stage": "SST_TRANSFORM_GRAYSCALE",
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"GrayscaleTransformationModes": [
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{
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"Mode": "GTM_ORIGINAL"
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},
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{
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"Mode": "GTM_INVERTED"
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}
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]
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}
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]
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},
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{
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"Name": "ip_decode_barcode",
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"ApplicableStages": [
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{
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"Stage": "SST_TRANSFORM_GRAYSCALE",
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"GrayscaleTransformationModes": [
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{
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"Mode": "GTM_ORIGINAL"
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}
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]
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},
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{
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"Stage": "SST_SCALE_IMAGE",
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"ImageScaleSetting": {
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"ScaleType": "ST_SCALE_DOWN",
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"ReferenceEdge": "RE_SHORTER_EDGE",
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"EdgeLengthThreshold": 99999
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}
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}
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]
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}
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],
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"TargetROIDefOptions": [
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{
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"Name": "roi_gs1_ai_barcode",
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"TaskSettingNameArray": [
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"task_gs1_ai_barcode"
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]
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}
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],
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"SemanticProcessingOptions": [
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{
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"Name": "sp_gs1_ai",
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"ReferenceObjectFilter": {
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"ReferenceTargetROIDefNameArray": [
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"roi_gs1_ai_barcode"
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]
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},
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"TaskSettingNameArray": [
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"dcp_gs1_ai"
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]
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}
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],
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"CodeParserTaskSettingOptions": [
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{
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"Name": "dcp_gs1_ai",
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"CodeSpecifications": [
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"GS1_AI"
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]
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}
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]
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}

‎examples/official/gs1ai/main.py

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import sys
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from dynamsoft_capture_vision_bundle import *
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import os
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import json
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if __name__ == '__main__':
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print("**********************************************************")
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print("Welcome to Dynamsoft Capture Vision - Barcode Sample")
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print("**********************************************************")
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error_code, error_message = LicenseManager.init_license(
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"DLS2eyJoYW5kc2hha2VDb2RlIjoiMjAwMDAxLTE2NDk4Mjk3OTI2MzUiLCJvcmdhbml6YXRpb25JRCI6IjIwMDAwMSIsInNlc3Npb25QYXNzd29yZCI6IndTcGR6Vm05WDJrcEQ5YUoifQ==")
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if error_code != EnumErrorCode.EC_OK and error_code != EnumErrorCode.EC_LICENSE_CACHE_USED:
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print("License initialization failed: ErrorCode:",
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error_code, ", ErrorString:", error_message)
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else:
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cvr_instance = CaptureVisionRouter()
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cvr_instance.init_settings_from_file('GS1AI_Scanner.json')
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while (True):
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image_path = input(
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">> Input your image full path:\n"
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">> 'Enter' for sample image or 'Q'/'q' to quit\n"
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).strip('\'"')
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if image_path.lower() == "q":
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sys.exit(0)
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if not os.path.exists(image_path):
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print("The image path does not exist.")
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continue
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result = cvr_instance.capture(
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image_path, "ReadGS1AIBarcode")
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if result.get_error_code() != EnumErrorCode.EC_OK:
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print("Error:", result.get_error_code(),
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result.get_error_string())
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else:
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items = result.get_items()
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for item in items:
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if item.get_type() == EnumCapturedResultItemType.CRIT_BARCODE:
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format_type = item.get_format()
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text_bytes = item.get_bytes()
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text = text_bytes.decode('utf-8')
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print('Barcode text: {} '.format(text))
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location = item.get_location()
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x1 = location.points[0].x
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y1 = location.points[0].y
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x2 = location.points[1].x
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y2 = location.points[1].y
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x3 = location.points[2].x
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y3 = location.points[2].y
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x4 = location.points[3].x
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y4 = location.points[3].y
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elif item.get_type() == EnumCapturedResultItemType.CRIT_PARSED_RESULT:
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try:
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json_string = item.get_json_string()
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data = json.loads(item.get_json_string())
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output_lines = []
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for item in data.get("ResultInfo", []):
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ai = item.get("FieldName", "")
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description = ""
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value = ""
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# Get ChildFields
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child_fields = item.get("ChildFields", [[]])[0]
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for field in child_fields:
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if field["FieldName"].endswith("AI"):
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# For dynamic AIs like 310n or 392n, use RawValue instead of FieldName
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ai = field.get("RawValue", ai)
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description = field.get("Value", "")
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elif field["FieldName"].endswith("Data"):
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value = field.get("Value", "")
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output_lines.append(f"AI: {ai}")
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output_lines.append(f"Description: {description.upper()}")
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output_lines.append(f"Value: {value}")
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output_lines.append("-" * 40)
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"\n".join(output_lines)
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print("\n".join(output_lines))
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except json.JSONDecodeError as e:
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print("JSON Decode Error:", e)
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continue
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input("Press Enter to quit...")

‎examples/official/gs1ai/requirements.txt

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dynamsoft-capture-vision-bundle

‎examples/official/gs1ai/test.png

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