Hi All,
Could someone please point me to a good matrix library for Go (i'm sure
something exists, although i can't seem to find it!).
Am hoping to do some image manipulation for which being able to work with
matrices would be great.
Have written simple helper stuff for images (i used to find mys
Are you looking for generalised matrices or simply image
rotation/translation?
On Mon, 2016-07-04 at 02:06 +1000, simran wrote:
>
> Could someone please point me to a good matrix library for Go (i'm
> sure
> something exists, although i can't seem to find it!).
>
> Am hoping to do some image man
Are you looking for generalised matrices or simply image
rotation/translation/transformation?
On Mon, 2016-07-04 at 02:06 +1000, simran wrote:
>
> Could someone please point me to a good matrix library for Go (i'm
> sure
> something exists, although i can't seem to find it!).
>
> Am hoping to do
Hi Dan,
I am hoping to find a general matrix library as i want to write my own
rotation, translation, reflection methods; however, if you do know a good
image library doing these, i'd appreciate it as a reference anyway.
cheers,
simran.
On Mon, Jul 4, 2016 at 10:00 AM, Dan Kortschak <
dan.korts
If the source image is an image.RGBA, then the colors are already int8s;
there's no additional information to lose. Here's an example that swaps the
green and red channels of the pixel at (0,0):
https://play.golang.org/p/i6F29OsdgD
On Sun, Jul 3, 2016 at 5:08 PM simran wrote:
> Hi Dan,
>
> I am
This one avoids the type assertion: https://play.golang.org/p/vDB9RboNZj
On Sun, Jul 3, 2016 at 5:11 PM Matt Harden wrote:
> If the source image is an image.RGBA, then the colors are already int8s;
> there's no additional information to lose. Here's an example that swaps the
> green and red chan
github.com/gonum/matrix/mat64 (soonish to be gonum.org/pkg/matrix/mat64)
is a general purpose matrix library.
A more specific image maths package is available at
github.com/go-gl/mathgl/mgl{32,64}.
On Mon, 2016-07-04 at 10:07 +1000, simran wrote:
> Hi Dan,
>
> I am hoping to find a general matri
I'm still getting the red's turning to pinks...
You make an interesting point about the format of the source image... i was
assuming that the image/{png,jpeg,gif} packages can read in a file and
whatever the colour profiles were, i could get the equivalent RGBA values
for them (this does appear to
Hi Dan,
I get a "page not found" on all those four links...
cheers,
simran.
On Mon, Jul 4, 2016 at 10:22 AM, Dan Kortschak <
dan.kortsc...@adelaide.edu.au> wrote:
> github.com/gonum/matrix/mat64 (soonish to be gonum.org/pkg/matrix/mat64)
> is a general purpose matrix library.
>
> A more specif
They're packages, not links.
https://github.com/gonum/matrix
- docs: https://godoc.org/github.com/gonum/matrix/mat64
https://github.com/go-gl/mathgl
- docs: https://godoc.org/github.com/go-gl/mathgl/mgl64
On Mon, 2016-07-04 at 12:08 +1000, simran wrote:
> Hi Dan,
>
> I get a "page not found" on
I think you're best off not taking the RGBA values and then building a
color from them. Just take the color you're given and use m.Set(x, y, c) on
the target image. If you need to modify the color, one way to do that would
be to create your own object that implements the color.Color interface (the
My previous example didn't compile because I made a change right before
hitting share. Here's a working version.
https://play.golang.org/p/E3dPLRjFvW
On Sun, Jul 3, 2016 at 7:27 PM Dan Kortschak
wrote:
> They're packages, not links.
>
> https://github.com/gonum/matrix
> - docs: https://godoc.org
:) Thanks Dan... my mental blank moment (which lasted an hour!) got me! :)
i definitely look a giraffe staring at the headlights now! :)
On Mon, Jul 4, 2016 at 12:27 PM, Dan Kortschak <
dan.kortsc...@adelaide.edu.au> wrote:
> They're packages, not links.
>
> https://github.com/gonum/matrix
> -
Thanks Matt.
After your advice (and some reflection) - i decided to refactor all my code
and keep the matrix in colour.Colour values rather than uint32's.
Am actually happier i did it, as it provides for more neater / more concise
code with better readability.
Interestingly though, when i do a
On Mon, Jul 4, 2016 at 2:50 PM, simran wrote:
> Interestingly though, when i do a colour swap (without any type casting
> happening now) - the colour problem is still there.
https://github.com/simran91/monkeysee/blob/master/mimage/mimage.go says:
r, g, b, a := colour.RGBA()
column[y] = color.RG
Hi Nigel,
Thankyou so very very much mate. This really fixed up the colour issues i
was having - really can't thank you enough for pointing this out, it was
eluding me for a long time (and probably would have continued to), but as
soon as you mentioned it, it makes perfect sense of course :)
I ow
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