genTexData initializing featues

[cyberbaze]

I run gentexdata on the same image twice, once on the original image and once on a copy of the image.
The first time i select 4, which is the highest value for extraction of tracking features, 3 the highest for initializing features and 10 for mindpi 80 for maxdpi. The second time i select 0 (lowest) for tracking features and 0 (lowest) for initializing features, mindpi 10 and maxdpi 80.

when i run dispfeatureset on the two fsets i get the following:

Extraction level for tracking features 4
Extraction level for initializing features 3
Min_dpi 10
Max_dpi 80

Size = (1000,563) Zoom = 1.000000
80.000000[dpi] image. Size = (1000,563)
fset: Num of feature points: 222
fset3: Num of feature points: 340
fset: Num of feature points: 222
fset3: Num of feature points: 340
63.496048[dpi] image. Size = (794,447)
fset: Num of feature points: 155
fset3: Num of feature points: 323
50.396847[dpi] image. Size = (630,355)
fset: Num of feature points: 90
fset3: Num of feature points: 618
40.000004[dpi] image. Size = (500,282)
fset: Num of feature points: 61
fset3: Num of feature points: 408
31.748024[dpi] image. Size = (397,223)
fset: Num of feature points: 34
fset3: Num of feature points: 250
25.198423[dpi] image. Size = (315,177)
fset: Num of feature points: 26
fset3: Num of feature points: 194
20.000002[dpi] image. Size = (250,141)
fset: Num of feature points: 13
fset3: Num of feature points: 143
15.874011[dpi] image. Size = (198,112)
fset: Num of feature points: 9
fset3: Num of feature points: 90
12.599211[dpi] image. Size = (157,89)
fset: Num of feature points: 5
fset3: Num of feature points: 52
10.000000[dpi] image. Size = (125,70)
fset: Num of feature points: 3
fset3: Num of feature points: 41

Extraction level for tracking features 0
Extraction level for initializing features 0
Min_dpi 10
Max_dpi 80

Size = (1000,563) Zoom = 1.000000
80.000000[dpi] image. Size = (1000,563)
fset: Num of feature points: 28
fset3: Num of feature points: 340
fset: Num of feature points: 28
fset3: Num of feature points: 340
63.496048[dpi] image. Size = (794,447)
fset: Num of feature points: 18
fset3: Num of feature points: 323
50.396847[dpi] image. Size = (630,355)
fset: Num of feature points: 19
fset3: Num of feature points: 618
40.000004[dpi] image. Size = (500,282)
fset: Num of feature points: 9
fset3: Num of feature points: 408
31.748024[dpi] image. Size = (397,223)
fset: Num of feature points: 5
fset3: Num of feature points: 250
25.198423[dpi] image. Size = (315,177)
fset: Num of feature points: 4
fset3: Num of feature points: 194
20.000002[dpi] image. Size = (250,141)
fset: Num of feature points: 3
fset3: Num of feature points: 143
15.874011[dpi] image. Size = (198,112)
fset: Num of feature points: 2
fset3: Num of feature points: 90
12.599211[dpi] image. Size = (157,89)
fset: Num of feature points: 1
fset3: Num of feature points: 52
10.000000[dpi] image. Size = (125,70)
fset: Num of feature points: 1
fset3: Num of feature points: 41

Why is the number for initializing features the same?

fset contains the features for continuous tracking and fset3 the features for the recognition in the first place, right?

[philip-lamb]

I believe the adjustment to the initializing features is no longer supported as of ARToolKit v5.3. It was a feature which adjusted the SURF feature extraction sensitivity in ARToolKit v5.2. There may be a way to adjust the sensitivity of the FREAK detector in 5.3 but I haven't looked into it (I didn't write that code).