softscients - Itulah judul yang banyak
berseliweran dan banyak dibahas dibeberapa paper yang intinya adalah membuat
algoritma pengenalan jenis daun berdasarkan perhitungan fitur morfologinya. Penulis
meng copy paste kan isi dari paper sebagai berikut: Digital morphology features extraction yang terdiri dari berikut
dan untuk mencoba menggunakan persamaan tersebut diimplementasikan kedalam
matlab
Disini hanya sampai pada tahap
perhitungan morfologinya saja tidak sampai pada recognition, pada tahap recognitionnya,
bisa kamu pakai dengan beragam metode yang ada saat ini baik supervised atau
unsupervised learning bahkan statistika biasa
Pengukuran Aspect ratio (1)
The aspect ratio is a ratio
between the maximum length Dmax and the minimum length Dmin
of the minimum bounding rectangle (MBR)
Pengukuran Rectangularity (2)
The rectangularity, representing
the ratio of ROI area and the MBR area, is calculated by
Pengukuran Area ratio of convex hull (3)
The area ratio of convex hull,
representing the ratio of the ROI area AROI and the convex hull area
AC, is calculated by
PengukuranPerimeter ratio of convex (4)
The perimeter ratio of convex
hull, representing the ratio of the ROI perimeter PROI and the
convexull perimeter PC, is calculated by
Pengukuran Sphericity
The sphericity is defined as
where ri represents
the radius of incircle of the ROI, and rc the radius of the excircle of the
ROI.
Pengukuran Circularity
The circularity is defined by all
of the bounding points of the ROI
where µR is the mean distance
between the center of the ROI and all of the bounding points, and ƟR is the
quadratic mean deviation of the
mean distance:
Pengukuran Eccentricity
The eccentricity is defined as the
ratio of the length of main inertia axis of the ROI EA to the length
of
minor inertia axis of the ROI EB
Pengukuran Form factor
The form factor is a popular
shape description characteristic independent of linear transformations given By
Berikut
contoh gambar daun yang digunakan dalam percobaan ini
Feature Extraction
aspect ratio : 1.4819
rectangularity : 0.70313
area ratio of convex hull : 0.37897
perimeter ratio of convexhull : 0.60063
Sphericity : 0.67482
circularity : 0.084613
form factor : 0.76346
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