jst
c37f8f8470
gofmt
2013-04-09 21:59:02 +02:00
jst
62777ac833
Precalculate bicubic factors, save some cycles.
2013-04-09 21:31:31 +02:00
jst
6448fff2ee
Generalize spline based filters
...
This also fixes a quality issue with Mitchell-Netravali: A factor was
missing in the calculation.
2013-04-04 22:32:33 +02:00
jst
82ab8b977c
Make kernel the only dependency of convolution1d
2012-12-13 22:13:37 +01:00
jst
e512502b3c
Use range for more idiomatic Go
2012-12-13 21:55:44 +01:00
jst
bf09bbe0a3
boolToUint: true -> 1
2012-12-11 20:35:47 +01:00
jst
0c69e0e0b7
Change order of fields in filterModel
2012-12-11 20:24:30 +01:00
jst
bf006ca38d
Description added
...
Describe filterModel interface,
Extract bool-to-int method
2012-12-11 20:18:23 +01:00
jst
dd1c157427
Include kernel boundary check
...
Filter kernels should yield Zero if they are evaluted outside their
intended size. Though filterModel.Interpolate doesn't do this by design,
it's better to include it anyways.
2012-12-10 18:56:53 +01:00
jst
3e06045c3f
Speed up computation: Try to avoid Image.At() as much as possible -> specialized color access for some image types
2012-09-21 20:02:25 +02:00
jst
e548f52385
Blur input image during downscaling by scaling the filter kernel to prevent moires in the output image
2012-09-19 21:03:56 +02:00
jst
d0b2b9bc39
Added MitchellNetravali, changed Lanczos a bit
2012-09-19 19:32:00 +02:00
jst
c980eecff5
Small simplification
2012-09-16 09:20:11 +02:00
jst
e96bbe5547
Unify filters and their dependencies
2012-09-15 20:24:14 +02:00
jst
3fc31c95cc
Kernel simplified
2012-09-15 19:30:32 +02:00
jst
eaf9383af0
filters.go simplified
2012-09-14 23:12:05 +02:00
jst
524fd851ea
Casting float to int has the same properties as math.Floor
2012-09-04 22:51:19 +02:00
jst
d93161631c
Use Kernel normalization for more accurate Lanczos resampling. Lanczos2 filter added
2012-09-04 18:49:04 +02:00
jst
339b8fd43a
Speed up calculation by avoiding dynamic casting
2012-09-01 00:21:10 +02:00
jst
14d51db8b4
Changed function signature to include error handling. Filters simplified.
2012-08-08 21:32:51 +02:00
nfnt
428642c9f1
initial commit
2012-08-02 21:59:40 +02:00
