diff options
Diffstat (limited to 'doc/gui.md')
-rw-r--r-- | doc/gui.md | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/doc/gui.md b/doc/gui.md new file mode 100644 index 0000000..3213af3 --- /dev/null +++ b/doc/gui.md @@ -0,0 +1,53 @@ +<a name="image.grapicalinter"></a> +## Graphical User Interfaces ## +The following functions, except for [image.toDisplayTensor](#image.toDisplayTensor), +require package [qtlua](https://github.com/torch/qtlua) and can only be +accessed via the `qlua` Lua interpreter (as opposed to the +[th](https://github.com/torch/trepl) or luajit interpreter). + +<a name="image.toDisplayTensor"></a> +### [res] image.toDisplayTensor(input, [...]) ### +Optional arguments `[...]` expand to `padding`, `nrow`, `scaleeach`, `min`, `max`, `symmetric`, `saturate`. +Returns a single `res` Tensor that contains a grid of all in the images in `input`. +The latter can either be a table of image Tensors of size `height x width` (greyscale) or +`nChannel x height x width` (color), +or a single Tensor of size `batchSize x nChannel x height x width` or `nChannel x height x width` +where `nChannel=[3,1]`, `batchSize x height x width` or `height x width`. + +When `scaleeach=false` (the default), all detected images +are compressed with successive calls to [image.minmax](simpletransform.md#image.minmax): +```lua +image.minmax{tensor=input[i], min=min, max=max, symm=symmetric, saturate=saturate} +``` +`padding` specifies the number of padding pixels between images. The default is 0. +`nrow` specifies the number of images per row. The default is 6. + +Note that arguments can also be specified as key-value arguments (in a table). + +<a name="image.display"></a> +### [res] image.display(input, [...]) ### +Optional arguments `[...]` expand to `zoom`, `min`, `max`, `legend`, `win`, +`x`, `y`, `scaleeach`, `gui`, `offscreen`, `padding`, `symm`, `nrow`. +Displays `input` image(s) with optional saturation and zooming. +The `input`, which is either a Tensor of size `HxW`, `KxHxW` or `Kx3xHxW`, or list, +is first prepared for display by passing it through [image.toDisplayTensor](#image.toDisplayTensor): +```lua +input = image.toDisplayTensor{ + input=input, padding=padding, nrow=nrow, saturate=saturate, + scaleeach=scaleeach, min=min, max=max, symmetric=symm +} +``` +The resulting `input` will be displayed using [qtlua](https://github.com/torch/qtlua). +The displayed image will be zoomed by a factor of `zoom`. The default is 1. +If `gui=true` (the default), the graphical user inteface (GUI) +is an interactive window that provides the user with the ability to zoom in or out. +This can be turned off for a faster display. `legend` is a legend to be displayed, +which has a default value of `image.display`. `win` is an optional qt window descriptor. +If `x` and `y` are given, they are used to offset the image. Both default to 0. +When `offscreen=true`, rendering (to generate images) is performed offscreen. + +<a name="image.window"></a> +### [window, painter] image.window([...]) ### +Creates a window context for images. +Optional arguments `[...]` expand to `hook_resize`, `hook_mousepress`, `hook_mousedoublepress`. +These have a default value of `nil`, but may correspond to commensurate qt objects. |