Open CV Filtering

mast = window = kernel (usually 3x3)

• usually black and white cv_u8

• execute for not zery

Kind

• (gausian) blur <> sharpening - used for out focusing

• embosing → edge

• remove noise = remove gausian noise from camera
• edge-preserving noise removal filter - bilateral filter
• median filering - remove salt & pepper noise

function

• SetTo(inputarrary value, inputarrary mask = noaarrary)

• copyTo(output img, input mask)

Anchor Point

Correlation and Convolution

• correlation
• mast

• convolution
• multiply after Origin symmetry