Advanced examples

icon

drag & drop

tag buttons

selection icons

player 'bouncy' mode

editing

vpv is not an image editor, but temporary manipulation can be useful for visualization

plambda and octave integration

vpv noisy nc denoised e:'1,2 -'

vpv denoised nv nc denoised o:'2 @(x)fftshift(abs(fft2(x)))'

vpv groundtruth e:'1 x x,l 0.5 * -'
vpv groundtruth e:'1 x x,l $1 * -'

vpv noisy denoised o:'1,2 @(x,y) cat(2, x(:,1:round($1)), y(:,round($1)+1:end))' l:fullscreen

vpv sar-image.tif e:'1 x[0] x[1] hypot'
vpv sar-image.tif e:'1 x[0] x[1] atan2'
vpv sar-image.tif o:'1 @(x)hypot(x(:,:,1),x(:,:,2))'
vpv sar-image.tif o:'1 @(x)atan2(x(:,:,1),x(:,:,2))'

SVG

livereload

vpv groundtruth svg:groundtruth_faces

display='absolute' (vpv-specific)

vpv groundtruth svg:gt.svg denoised svg:deno.svg

terminal

vpv groundtruth denoised t:'imgerr PSNR #1 #2'

numpy arrays

.npy support (4D arrays)
    [n, h, w, c] = sequence of multichannel images
    try to detect between [h, w, c] and [n, h, w]

livereload (altough I need to debug it)

vpv test.npy

plugin system

+--------------- vpv --------------------+
|                                        |
|    +----------+     +--+--------+      |
|    |          |     |  |userconf|      |
|    |          |     |  +--------|      |
|    |          |     |           |      |
|    |          +----->           |      |
|    |   C++    |     |   Lua     |      |      (process spawned by python.lua)
|    |          <-----+           |      |      +---------- Python -----------+
|    |          |     +- Plugins -+      |      |              |  Google      |
|    |          |     |dispatcher |      |      |              |   Earth      |
|    |          |     +-----------+      |      |  dispatcher  +--------------+
|    |          |     |   |   | .------pipe----->              |  Profile     |
|    |          |     |   |   | ·<-----pipe-----+              +--------------+
|    +----------+     +---+---+---+      |      |              |  Your plugin |
|                                        |      |              |  here        |
+----------------------------------------+      +--------------+--------------+

located at https://github.com/kidanger/vpv-plugins for now

API not fully developed (but will look pythonic)

• google earth: get events and sequence information

• profile (work in progress): fetch pixels and display SVG