Barcode World
I was able to write the following Python script to answer the question:
import cv2
# pip install pyzbar
from pyzbar.pyzbar import decode
import os
data = bytearray()
def BarcodeReader(image):
# Read the image in numpy array using cv2
img = cv2.imread(image)
# Decode the barcode image
detectedBarcodes = decode(img)
if not detectedBarcodes:
print("No valid barcode detected in the passed image...")
else:
for barcode in detectedBarcodes:
if barcode.data != "":
global data
data += barcode.data
if __name__ == "__main__":
for x in range(1, 9375):
image = os.path.join("Barcode_World", str(x) + ".png")
print("File:", image)
BarcodeReader(image)
print("All data:", data)
with open("data.txt", "w") as f:
# Split the data by space
data = data.split(b" ")
# Convert the data to string
data = [x.decode("utf-8") for x in data]
# Convert each portion from character code to character
data = [chr(int(x)) for x in data]
# Join the data
data = "".join(data)
# Write the data to file
f.write(data)
This iterates over all the provided barcode images, decodes them, and joins the text by numerical order. The output is written to data.txt:
A barcode (also spelled bar code) is a method of representing data in a visual, machine-readable form. Initially, barcodes represented data by varying the widths and spacings of parallel lines. These barcodes, now commonly referred to as linear or one-dimensional (1D), can be scanned by special optical scanners, called barcode readers. Later, two-dimensional (2D) variants were developed, using rectangles, dots, hexagons and other geometric patterns, called matrix codes or 2D barcodes, although they do not use bars as such. 2D barcodes can be read or deconstructed using application software on mobile devices with inbuilt cameras, such as smartphones. The barcode was invented by Norman Joseph Woodland and Bernard Silver and patented in the US in 1951 (US Patent 2,612,994). The invention was based on Morse code[1] that was extended to thin and thick bars. However, it took over twenty years before this invention became commercially successful. An early use of one type of barcode in an industrial context was sponsored by the Association of American Railroads in the late 1960s. Developed by General Telephone and Electronics (GTE) and called KarTrak ACI (Automatic Car Identification), this scheme involved placing colored stripes in various combinations on steel plates which were affixed to the sides of railroad rolling stock. Two plates were used per car, one on each side, with the arrangement of the colored stripes encoding information such as ownership, type of equipment, and identification number.[2] The plates were read by a trackside scanner, located for instance, at the entrance to a classification yard, while the car was moving past.[3] This is the flag - B4rc0d3_H1570rY. The project was abandoned after about ten years because the system proved unreliable after long-term use.[2] Barcodes became commercially successful when they were used to automate supermarket checkout systems, a task for which they have become almost universal. Their use has spread to many other tasks that are generically referred to as automatic identification and data capture (AIDC). The very first scanning of the now-ubiquitous Universal Product Code (UPC) barcode was on a pack of Wrigley Company chewing gum in June 1974.[4] QR codes, a specific type of 2D barcode, have recently become very popular.[5] Other systems have made inroads in the AIDC market, but the simplicity, universality and low cost of barcodes has limited the role of these other systems, particularly before technologies such as radio-frequency identification (RFID) became available after 1995.
- Do you know the history of barcodes? (20 points)
Answer:: SBT{B4rc0d3_H1570rY}