Pixels
Preprocessing
100

How do you represent colors with numbers?

RGB(Red, Green, Blue)

100

What is cropping?

Cropping is the process of removing outer areas of a photo.

200

How specifically are the colors in pixels represented as numbers?

Colors in pixels are represented through numbers 0-255.
200

What is blurring?

Blurring makes an image simpler by averaging nearby pixel values to get rid of sharp contrast or noise.

300

What color does 255, 255, 255 in RGB make?

White

300

What is a requirement for every ML model?

They all require the same size image.

400

What is thresholding?

Thresholding is the process of converting the pixels in an image to either black or white based on a threshold.

400

How many arguments does Color Space Conversion take?

2

500

What is greyscaling?

Greyscaling is a method of converting a color image or document into shades of gray, ranging from pure white to deep black

500

What are ALL the methods of preprocessing?(+- 1 is okay)

Resizing: Makes all examples the same

Normalization: Puts all images on the same scale

Grayscale: Makes shape/brightness features clearer

Cropping: Focuses attention

Noise removal: Helps ML “see” patterns

Thresholding: Highlights objects shapes



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