2.9. FEATURESEXTRACTION
231
Computeminimalpathbetweentwopointsonselectedpotentialmaps.
Defaultvalue:
• ’is
high
connectivity=0’.
Example379:image.jpg --gradient
norm -fill.
1/(1+i) -minimal
path.
0,0,0,100%,100%,0
-pointcloud.
0 -
*
.
280 -to
rgb.
-resize.
[-2],0 -or
2.9.23 -mse(+)
ComputeMSE(Mean-SquaredError)matrixbetweenselectedimages.
Example380:image.jpg --noise 30 --noise[0] ] 35 --noise[0] ] 38 -cut.
0,255 -mse
2.9.24 -patches
Arguments:
• patch
width>0,patch
height>0,patch
depth>0,x0,y0,z0,
x1,
y1,
z1,...,
xN,
yN,
zN
ExtractN+1patchesfromselectedimages,centeredatspecifiedlocations.
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232
CHAPTER2. LISTOFCOMMANDS
Example381:image.jpg --patches 64,64,1,153,124,0,184,240,0,217,126,0,275,38,0
2.9.25 -patchmatch(+)
Arguments:
• [patch
image],patch
width>=1,
patch
height>=1,
patch
depth>=1,
nb
iterations>=0,
nb
randoms>=0,
output
score={ 0
| 1
},
[guide]
Estimatecorrespondencemapbetweenselectedimages andspecifiedpatchimage,usingthepatchmatch
algorithm,asdescribedinthepaper:”PatchMatch:ARandomizedCorrespondenceAlgorithmforStructural
ImageEditing”,by
ConnellyBarnes,EliShechtman,AdamFinkelstein,DanBGoldman(2009).
Eachpixelofthereturnedcorrespondencemapgivesthelocation(p,q)oftheclosestpatchinthespecified
patchimage.If’output
score=1’,thethirdchannelgivesthecorrespondingmatchingscoreforeachpatchas
well.
Defaultvalues:
• ’patch
height=patch
width’, ’patch
depth=1’, ’nb
iterations=5’,
’nb
randoms=5’, ’output
score=0’and’guide=(undefined)’.
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2.9. FEATURESEXTRACTION
233
Example382:image.jpg -testimage2d 320 --patchmatch[0] [1],3 --warp..
[-1],0
2.9.26 -plot2value
Retrievevaluesfromselected2dgraphplots.
Example383:400,300,1,1,’if(y>300
*
abs(cos(x/10+2
*
u)),1,0)’ --plot2value e --display
graph.
400,300
2.9.27 -pointcloud
Arguments:
type = = { -X=-X-opacity
| 0=binary
| 1=cumulative
| 2=label
},
width,
height>0,
depth>0
ConvertaNx1,Nx2,Nx3orNxMimageasapointcloudina1d/2dor3dbinaryimage.
If’M’>3,the3-to-Mlinessetsthe(M-3)-dimensionalcolorateachpoint.
Parameters’width’,’height’and’depth’arerelatedtothesizeofthefinalimage: -Ifsetto0,thesizeis
automaticallysetalongthespecifiedaxis. -IfsettoN>0,thesizealongthespecifiedaxisisN.-Ifsetto
N<0,thesizealongthespecifiedaxisisatmostN.
Pointswithcoordinatesthatarenegativeorhigherthanspecified(’width’,’height’,’depth’)arenotplotted.
Defaultvalues:
• ’type=0’and’max
width=max
height=max
depth=0’.
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CHAPTER2. LISTOFCOMMANDS
Example384:3000,2 -rand 0,400 0 --pointcloud 0 0 -dilate.
3
Example385:3000,2 -rand 0,400 0 {w} } {w},3 3 -rand.
0,255 -append y y --pointcloud d 0 -dilate.
3
2.9.28 -psnr
Arguments:
max
value
ComputePSNR(PeakSignal-to-NoiseRatio)matrixbetweenselectedimages.
Defaultvalue:
• ’max
value=255’.
Example386:image.jpg --noise 30 0 --noise[0] 35 5 --noise[0] 38 -cut.
0,255 -psnr 255
-replace
inf 0
2.9.29 -segment
watershed
Arguments:
threshold>=0
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VB.NET PDF Convert to Images SDK: Convert PDF to png, gif images
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2.9. FEATURESEXTRACTION
235
Applywatershedsegmentationonselectedimages.
Defaultvalues:
• ’threshold=2’.
Example387:image.jpg --segment
watershed 2
2.9.30 -skeleton
Arguments:
smoothness[%]>=0
Computeskeletonofbinaryshapesusingdistancetransform.
Defaultvalue:
• ’smoothness=0’.
Example388:image.jpg -threshold 50% --skeleton n 0
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236
CHAPTER2. LISTOFCOMMANDS
2.9.31 -ssd
patch
Arguments:
• [patch],
use
fourier={ 0
| 1 1 },
boundary
conditions={ 0=dirichlet
| 1=neumann n }
ComputefieldsofSSDbetweenselectedimagesandspecifiedpatch.
Argument’boundary
conditions’isvalidonlywhen’use
fourier=0’.
Defaultvalue:
• ’use
fourier=0’and’boundary
conditions=0’.
Example389:image.jpg --crop p 20%,20%,35%,35% --ssd
patch[0] [1],0,0
2.9.32 -thinning
Computeskeletonofbinaryshapesusingmorphologicalthinning
(Thisisaquiteslowiterativeproces)
Example390:image.jpg -threshold 50% --thinning
2.9.33 -tones
Arguments:
2.9. FEATURESEXTRACTION
237
• N>0
GetNtonesmasksfromselectedimages.
Example391:image.jpg --tones 3
2.9.34 -topographic
map
Arguments:
nb
levels>0,
smoothness
Renderselectedimagesastopographicmaps.
Defaultvalues:
• ’nb
levels=16’and’smoothness=2’.
Example392:image.jpg --topographic
map 10
2.9.35 -variance
patch
Arguments:
238
CHAPTER2. LISTOFCOMMANDS
patch
size>=1
Computevarianceofeachimagespatchcenteredat(x,y),inselectedimages.
Defaultvalue:
• ’patch
size=16’
Example393:image.jpg --variance
patch
2.10 Imagedrawing
2.10.1 -axes
Arguments:
• x0,x1,y0,y1,
font
height>=0,
opacity,
pattern,
color1,...
Drawxy-axesonselectedimages.
’pattern’isanhexadecimalnumberstartingwith’0x’whichcanbeomittedevenifacolorisspecified.
Todrawonlyonex-axisatrowY,setboth’y0’and’y1’toY.
Todrawonlyoney-axisatcolumnX,setboth’x0’and’x1’toX.
Defaultvalues:
• ’font
height=14’, ’opacity=1’, ’pattern=(undefined)’and’color1=0’.
2.10. IMAGEDRAWING
239
Example394:400,400,1,3,255 -axes -1,1,1,-1
2.10.2 -ball
Arguments:
size>0,
R,
G,
B,0<=
specular
light<=8,0<=
specular
size<=8,
shadow>=0
Inputa2dRGBAcoloredballsprite.
Defaultvalues:
• ’size=64’, , ’R=255’, , ’G=R’, ’B=R’, ’specular
light=0.8’, ’specular
size=1’and
’shading=1.5’.
Example395:-repeat 9 -ball {1.5ˆ($>+2)},${-RGB} -done -append x
2.10.3 -chessboard
Arguments:
• size1>0,
size2>0,
offset1,
offset2,
angle,
opacity,
color1,..,
color2,..
240
CHAPTER2. LISTOFCOMMANDS
Drawchessboardonselectedimages.
Defaultvalues:
• ’size2=size1’, ’offset1=offset2=0’, , ’angle=0’, ’opacity=1’, , ’color1=0’and
’color2=255’.
Example396:image.jpg -chessboard 32,32,0,0,25,0.3,255,128,0,0,128,255
2.10.4 -cie1931
DrawCIE-1931chromaticitydiagramonselectedimages.
Example397:500,400,1,3 -cie1931
2.10.5 -circle
Arguments:
• x[%],y[%],R[%],
opacity,
pattern,
color1,..
Drawspecifiedcoloredcircleonselectedimages.
Aradiusof’100%’standsfor’sqrt(widthˆ2+heightˆ2)’.
Documents you may be interested
Documents you may be interested