Video Analytics Concepts

• Image - Matrix of Intensity Values
• Each pixel has a byte where you can store information
• Image can be represented in a matrix
• Image can be represented as a function

Image Processing Operations

• Point, Local, Global
• Point - Take every pixel and perform operation
• Local - Local Neighbourhood data manipulation. Global is extension of local

Point Operations

• Image Enhancement - new_Pixel = max-old_Pixel+min
• Contrast Stretching - Histogram stretching

Options

• Local - Noise reduction using moving average
• Weighted sum of neighbours computation
• Linear Filtering - Cross Correlation, Gaussian Filter
• Convolution Vs Correlation

Happy Learning!!!