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[PPDM] Citra - Coggle Diagram
[PPDM] Citra
digital representation
sampling
digital resolution
higher sampling, better
types
sampling uniform
same row and columns
square
sampling non-uniform
adaptive
soft
and
hard
quantization
compression multi numbers
outputs a scale
types
uniform
same grayscale interval
e.g
intensity 1-10 given 1
intensity 11-20 given 2
non-uniform
soft
when more detail
hard
when less detail
tapered
soft
when more frequent
hard
when less frequent
digital resolution
spatial resolution
number of pixels as a whole
the higher, the more pixel
sampling
intensity resolution
(resolusi kecermelangan)
number of pixels per square inch
the clearness of image
quantization
texture analysis
texture types
microstructure
unpredictable pattern
not easily recognized by eyes
macrostructure
predictable pattern
easily recognized by eyes
features
orde 1
statistical values
works on grayscale
example
mean variance kurtosis skewness
orde 2
works on coocurent matrix
example
contrast correlation variance