libvips/TODO

275 lines
5.8 KiB
Plaintext

blocking bugs
=============
- argh
(nip2:11576): GLib-GObject-WARNING **: value "-0.000000" of type
`gdouble' is invalid or out of range for property `yres' of
type `gdouble'
similarly for vips_max() of an image which contains NaN, -INFINITY etc.
- new binding is still missing constants
how do boxed types work? confusing
we need to be able to make a VipsArrayDouble
mosaic
======
- balance should use new meta stuff
resample
========
- check mosaic1, global_balance, similarity etc. use of im__affine
how can we move them to im_affinei ?
- perspective transform with a matrix ... base it on the Lenz transformer, but
partial
foreign
=======
- interlaced jpg needs massive memory, we should have two jpg read modes, like
png
- add more sequential mode readers
$ grep -l write_line *.c
csv.c
matlab.c
openexr2vips.c
ppm.c
radiance.c
- is the tif reader deadlocking sometimes?
is it when we get a non-seq error?
should there be some way to set the seq cache size?
- foreign docs come up as "VipsForeignSave", annoying, why?
- make an argb coding type, add to nip2 and known coding
see openslide
- add nifti support
http://niftilib.sourceforge.net/
- support planar tiff
- add matlab write
- im_exr2vips can now use c++ api
see TODO notes in openexr read (though they all need more openexr C API)
consider openexr write
- magick2vips should spot ICC profiles and attach them as meta
- also png2vips?
- magick should set some header field for n_frames and frame_height? see also
analyze
- im_csv2vips() could use "-" for filename to mean stdin
but then we'd have to read to a malloced buffer of some sort rather than an
image, since we might need to grow it during the read, since we couldn't
then seek
packaging
=========
- test _O_TEMPORARY thing on Windows
- do we bundle "convert" in the OS X / win32 builds? if we don't we
should
convolution
===========
- revisit orc conv
use an 8.8 accumulator ... build the scale into the 8.8 coeffs ... no div at
the end, just a shift
need 8 x 8.8 -> 8.8 for each coeff though
- im_conv()/im_morph() could have more than 10 programs? try 20 and see if we
still have a speedup
make a base class for vector area operations with a matrix with three vfuncs
for init / generate code for one element / end and a gslist of programs, use
that as the base for morph and conv
wait for vipsobject for this
colour
======
- lab [100,0,0] -> srgb [255, 255, 254]? how odd
- use D65 in cmsCreateLab4Profile() ? not sure
arithmetic
==========
- avg/dev etc. should uncode images? eg. labq2lab etc.
how about ifthenelse?
- bandalike: consider RGB + RGBA ... we should bandup by adding a black band
(or white?? unclear)
not clear if this is a good idea ... eg. when we upband a 1 band to a 2
band, should we duplicate the 1 band or add black?
- HAVE_HYPOT could define a hypot() macro?
iofuncs
=======
- we have VipsArrayObject and also vips_object_local_array()
can we make one use the other?
- need vips_image_invalidate_area()
- look at libpeas for plugin support
http://live.gnome.org/Libpeas
- how about
vips max add[babe.jpg,babe2.jpg]
does that make any sense?
vips copy add[babe.jpg,add[babe2.jpg,babe3.jpg]] sum.v
perhaps use curly brackets for code?
vips max add{babe.jpg,babe2.jpg}
no brackets or square brackets for options
- transform_g_string_array_image() can't handle quoted strings, so filenames
with spaces will break
is there an easy fix? can we reuse code from the csv parser?
the csv parser just parses FILE* streams, we'd need to break it out
- note member free stuff in vipsobject docs
should boxed get freed in finalise rather than dispose?
vipsobject has few docs atm :(
- vips_object_set_argument_from_string() needs more arg types
must be some way to make this more automatic
- generate the code for vips_add() etc. automatically? it might be
nice to have them all in one place at least
- what does G_UNLIKELY() do? can we use it?
- look into G_GNUC_DEPRECATED for back compat in vips8
- should im_rwcheck() copy to disc?
maybe im_rwcheck_disc() copies to im->filename and maps that
rather awkward to do atm with the way check.c is structured
swig
====
- swig is not wrapping im_project() correctly ... returns an extra VImage via
a param
- doc strings would be nice, read the SWIG notes on this
new bindings
============
- Vips.Image has members like chain, __subclasshook__ etc etc, are we
really subclassing it correctly?
- add __add__ etc overloads
freq_filt
=========
- fft with odd width or height is broken ... DC ends up in the wrong place
libvipsCC
=========
- need new C++ API
- need an im_init_world() for C++ which does cmd-line args too, so C++ progs
can get --vips-progress and stuff automatically
tools
=====
- could spot "copy" and turn on seq mode automatically?
perhaps there should be something on operations to indicate seq-ability
- need a way to make the vips.1 etc. man pages
gtk has things like docs/reference/gtk/gtk-update-icon-cache.xml and man
pages are made from that with xslt
- get rid of a lot of the command-line programs, who wants to write a man page
for batch_image_convert etc yuk
- can we make man pages for the API as well? probably not from googling a bit
- rename header, edvips as vipsheader, vipsedit
maybe have back compat links?
new operations
==============
- bilateral filtering, see:
http://en.wikipedia.org/wiki/Bilateral_filter
http://www.shellandslate.com/fastmedian.html
http://people.csail.mit.edu/sparis/bf_course/
also a mail from Martin Breidt has links to several fast free C
implementations
- http://en.wikipedia.org/wiki/Otsu%27s_method
- non-linear sharpen: replace each pixel by the lightest or darkest neighbour
depending on which is closer in value