Electronic Imaging

Fundamentals:

ID of COFFEE BAGS

“..any sufficiently advanced technology is indistinguishable from magic.” Arthur C. Clark

SEPTEMBER 2008

Presented by

Barry T. Fryer Dudley(MBA {IT}; MSc {Image Analysis}

Background:Background: To blend coffee To blend coffee the right beans in the correct the right beans in the correct quantity should be added. quantity should be added. Selection and counting by Selection and counting by human inspectors prone to short human inspectors prone to short and long term variations.and long term variations.

An automated coffee bag An automated coffee bag inspection system using a inspection system using a camera is proposed. camera is proposed.

Requirement:Requirement: Provide Provide image analysis technology image analysis technology linked to a camera to ID and linked to a camera to ID and count coffee bags.count coffee bags.

Why do Image Analysis?

Better Definition of Contrasting Areas Improved Precision/Accuracy in Measurements Reproducibility of Results Higher Throughput than Manual Methods

A Word About Our Eyes

Eyes are very good contrast adjusters, but not good for distinguishing subtle variations in color

Eyes can discern about 30 continuous levels of gray or color in a field of view

Eyes are not good judges of distance Eyes cannot accurately reproduce

measurements

Which is BIGGER / LONGER???

Electronic Imaging Fundamentals

Acquire

Process

Identify

Analyze

Report

Arguably, the most important aspect of all Proper setup of imaging apparatus is vital Obtain maximum contrast and dynamic range Reduce “noise” and other unwanted artifacts Uniform lighting (light) Product presentation (right way up) Resolution & Colour (CCTV VS DIGITAL)

Acquiring the Image

Slide 9 www.I-Cube.co.za

Lens

Image sensorDigitizing

Pre-processing

TimingInterface

PLC

Cat-5eEthernet cableup to 100 m

Local I/Os:-Trigger input-Results output

Illumination control

Image ProcessingIn PC

Illumination

(Lens IrisVideo)

Power

Acquire

Thresholding an Image Select appropriate morphometric characteristics

Identify regions of interest to analyse

Mask regions

ColourSizeShapeIntensity

Slide 11 www.I-Cube.co.za

Product ReviewImage Analysis SOFTWARE and HARDWARE would be used to ID and count the coffee bags passing the camera.

All bags passing the camera would be captured and compared to a database of known coffee bags. 

Possible to have an audio and visual alarm on site or generated in the control room if bags either incorrect type or below or above the number required.

A report would be generated showing date, time, images etc.

SYSTEM DESIGNItem Part No Qty Unit Price Price

DVT 515 1 R 30,380.00 R 30,380.00

PSU 1 R 900.00 R 900.00

Break out box CON-IBOB 1 R 3,915.00 R 3,915.00

Ethernet Cable CCB-84901-1002-02 1 R 1,044.00 R 1,044.00

I/O Cable CCB-84901-0902-05 1 R 1,044.00 R 1,044.00

Lighting 1 R 12,520.00 R 12,520.00

Telecentric Lens TC2346 1 R 9,007.98 R 9,007.98Measurement design, configuration and verification (per day) 2 R 7,500.00 R 15,000.00

Commissioning on site (per day) 3 R 7,500.00 R 22,500.00

Total R 96,310.98

3 Payment Options• Cost per transaction (no image received, no

payment) @ R 0.99 c per bag

• Fixed monthly cost (same price regardless of no. of bags counted) = R 3, 852.44

• Capital amount (no further costs) @ R 96 310.98

Barry T. DUDLEY(MBA {IT}; MSc {Image Analysis}; BSc {Brewing}; BSc Hons {Waste Technology})

www.i-cube.co.za Cell: +27 (0) 82 562 8225MADADENI PH +27 (0) 31 764-3077

82 Kloof Falls Rd Fax 0866539659Kloof, Durban, Kwa-Zulu Natal, 3610

E-mail: images@I-Cube.co.za

“..any sufficiently advanced technology is indistinguishable from magic.” Arthur C. Clark

Technical QUESTIONS: