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Docker for ARM environments
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‎examples/official/arm32_arm64/DockerfileArm32‎

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FROM arm32v7/python
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RUN apt-get update && apt-get install -y cmake libgl1-mesa-glx
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RUN pip install dynamsoft-barcode-reader-bundle opencv-python pillow
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‎examples/official/arm32_arm64/DockerfileArm64‎

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FROM arm64v8/python
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RUN apt-get update && apt-get install -y cmake libgl1-mesa-glx
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RUN pip install dynamsoft-barcode-reader-bundle opencv-python pillow
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‎examples/official/arm32_arm64/README.md‎

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# Docker Images for Python Barcode Detection on ARM64 and ARM32
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This repository provides a guide on how to use the Dynamsoft Barcode Reader Python SDK within Docker containers designed for ARM64 and ARM32 architectures.
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## Building Docker Images for ARM64 and ARM32
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To build Docker images for ARM64 and ARM32, execute the following commands:
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```bash
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docker run --rm --privileged multiarch/qemu-user-static:register --reset
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docker build --platform linux/arm64 -f DockerfileArm64 -t <IMAGE-NAME> .
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docker build --platform linux/arm/v7 -f DockerfileArm32 -t <IMAGE-NAME> .
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```
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## Running Python Barcode Detection in Docker Containers
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To run barcode detection using the Python script inside a Docker container, use these commands:
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```bash
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docker run --platform linux/arm64 -it --rm -v ${pwd}:/usr/src/myapp -w /usr/src/myapp <IMAGE-NAME> python pillow_test.py
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docker run --platform linux/arm/v7 -it --rm -v ${pwd}:/usr/src/myapp -w /usr/src/myapp <IMAGE-NAME> python pillow_test.py
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```
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**Try the Pre-built Images**
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You can also try the pre-built images directly:
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```bash
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docker run --platform linux/arm64 -it --rm -v ${pwd}:/usr/src/myapp -w /usr/src/myapp yushulx/dbr-arm64:1.0 python pillow_test.py
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docker run --platform linux/arm/v7 -it --rm -v ${pwd}:/usr/src/myapp -w /usr/src/myapp yushulx/dbr-arm32:1.0 python pillow_test.py
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```
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## Emulating Raspberry Pi
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Use [dockerpi](https://github.com/lukechilds/dockerpi) to test the performance of the Python Barcode SDK on Raspberry Pi emulators:
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```bash
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docker run -it lukechilds/dockerpi pi2
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docker run -it lukechilds/dockerpi pi3
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```
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## Blog
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[A Guide to Running ARM32 and ARM64 Python Barcode Readers in Docker Containers](https://www.dynamsoft.com/codepool/docker-arm64-arm32-python-barcode-qr-recognition.html)

‎examples/official/arm32_arm64/capture.py‎

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import cv2
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from dynamsoft_capture_vision_bundle import *
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import numpy as np
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capture = cv2.VideoCapture(0)
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if not capture.isOpened():
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print("Cannot open camera")
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exit()
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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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index = 0
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while True:
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ret, frame = capture.read()
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if cv2.waitKey(1) == ord('q'):
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break
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result = cvr_instance.capture(
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frame, EnumPresetTemplate.PT_READ_BARCODES.value)
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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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print('Found {} barcodes.'.format(len(items)))
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for item in items:
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format_type = item.get_format_string()
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text = item.get_text()
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print("Barcode Format:", format_type)
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print("Barcode Text:", 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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print("Location Points:")
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print("({}, {})".format(x1, y1))
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print("({}, {})".format(x2, y2))
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print("({}, {})".format(x3, y3))
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print("({}, {})".format(x4, y4))
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print("-------------------------------------------------")
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pts = np.array([(x1, y1), (x2, y2), (x3, y3), (x4, y4)], np.int32)
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pts = pts.reshape((-1, 1, 2))
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cv2.drawContours(frame, [pts], 0, (0, 255, 0), 2)
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cv2.putText(frame, text, (x1, y1 - 10),
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cv2.FONT_HERSHEY_SIMPLEX, 0.5, (0, 0, 255), 2)
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cv2.imshow(
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"Original Image with Detected Barcodes", frame)
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cv2.destroyAllWindows()

‎examples/official/arm32_arm64/cv_test.py‎

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#!/usr/bin/env python3
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import os
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import cv2 as cv
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from dynamsoft_capture_vision_bundle import *
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import time
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def main():
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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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# read file list
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folder = '../../../images'
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target_dir = os.path.join(os.getcwd(), folder)
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cvr_instance = CaptureVisionRouter()
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if os.path.exists(target_dir):
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filelist = os.listdir(target_dir)
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index = 0
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while index < 3:
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file = filelist[index]
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filapath = os.path.join(target_dir, file)
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if os.path.isfile(filapath):
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image = cv.imread(filapath)
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start_time = time.time()
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result = cvr_instance.capture(image, EnumPresetTemplate.PT_READ_BARCODES.value)
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elapsed_time = time.time() - start_time
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print(filelist[index] + ", elapsed time: " +
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str(round(elapsed_time * 1000)) + "ms, ")
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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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print('Found {} barcodes.'.format(len(items)))
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for item in items:
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format_type = item.get_format_string()
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text = item.get_text()
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print("Barcode Format:", format_type)
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print("Barcode Text:", text)
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print("-------------------------------------------------")
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index += 1
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if __name__ == '__main__':
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main()

‎examples/official/arm32_arm64/file_test.py‎

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#!/usr/bin/env python3
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import os
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from dynamsoft_capture_vision_bundle import *
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import time
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def main():
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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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# read file list
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folder = '../../../images'
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target_dir = os.path.join(os.getcwd(), folder)
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cvr_instance = CaptureVisionRouter()
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if os.path.exists(target_dir):
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filelist = os.listdir(target_dir)
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index = 0
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while index < 3:
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file = filelist[index]
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filapath = os.path.join(target_dir, file)
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if os.path.isfile(filapath):
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start_time = time.time()
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result = cvr_instance.capture(filapath, EnumPresetTemplate.PT_READ_BARCODES.value)
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elapsed_time = time.time() - start_time
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print(file + ", elapsed time: " +
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str(round(elapsed_time * 1000)) + "ms, ")
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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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print('Found {} barcodes.'.format(len(items)))
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for item in items:
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format_type = item.get_format_string()
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text = item.get_text()
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print("Barcode Format:", format_type)
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print("Barcode Text:", text)
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print("-------------------------------------------------")
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index += 1
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if __name__ == '__main__':
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main()

‎examples/official/arm32_arm64/pillow_test.py‎

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#!/usr/bin/env python3
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import os
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import time
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from PIL import Image
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from dynamsoft_capture_vision_bundle import *
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import numpy as np
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def main():
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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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# read file list
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folder = '../../../images'
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target_dir = os.path.join(os.getcwd(), folder)
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print(target_dir)
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cvr_instance = CaptureVisionRouter()
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if os.path.exists(target_dir):
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filelist = os.listdir(target_dir)
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index = 0
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while index < len(filelist):
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file = filelist[index]
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filapath = os.path.join(target_dir, file)
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index += 1
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if os.path.isfile(filapath):
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with Image.open(filapath) as im:
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try:
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start_time = time.time()
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img_array = np.array(im)
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result = cvr_instance.capture(img_array, EnumPresetTemplate.PT_READ_BARCODES.value)
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elapsed_time = time.time() - start_time
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print(file + ", elapsed time: " + str(round(elapsed_time *
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1000)) + "ms, " + ' results: ' + str(len(result.get_items())))
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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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print('Found {} barcodes.'.format(len(items)))
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for item in items:
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format_type = item.get_format_string()
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text = item.get_text()
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print("Barcode Format:", format_type)
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print("Barcode Text:", text)
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print("-------------------------------------------------")
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except Exception as err:
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print(err)
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print('-------------------------------------')
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if __name__ == '__main__':
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main()

‎examples/official/arm32_arm64/requirements.txt‎

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dynamsoft-barcode-reader-bundle
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opencv-python
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pillow

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