Specify colormap for implay without using the gui

[Hannes]

I need to use implay to view a number of image sequences. They all have different pixel values and need different colormaps. I know I can use the GUI to set the min/max values for the colormap once the sequence has loaded.
But that is really inefficient compared to giving the colormap on the commandline.

So, the question is:
Can I programmatically (from the commandline) give implay a colormap to use?

[Fab Braun]

"Hannes " <kig...@gmail.com> wrote in message <h8lemm$78l$1...@fred.mathworks.com>...

hi hannes!

i'm having exactly the same problem...did you already find a workaround or fix for this issue?

thanks!
fab

[Fab Braun]

"Hannes " <kig...@gmail.com> wrote in message <h8lemm$78l$1...@fred.mathworks.com>...

hi hannes!

[Evan Boote]

I too, am having the same error message. I am using immovie to convert an US data set to play in an 'implay' window. The same error occurs with both Windows and Mac OSX.
The command window stream is below:

??? Error using ==> getappdata
Too many output arguments.

Error in ==> uimgr.getappdata at 53
[y{i},foundData(i)] = getappdata(hNode,name{i});

Error in ==> uimgr.uipushtool.uipushtool>createUIPushTool at 39
set(hWidget,'cdata',uimgr.getappdata(hThis,hThis.iconAppData));

Error in ==> uimgr.uipushtool.uipushtool>@(hThis)createUIPushTool(hThis) at 24
h.WidgetFcn = @(hThis)createUIPushTool(hThis);

Error in ==> uimgr.uiitem.render_widget at 50
theWidget = WidgetFcn(h);

Error in ==> uimgr.uiitem.render at 26
render_widget(h);

Error in ==> renderCore at 109
render(hChild, childGraphicalParent);

Error in ==> uimgr.uigroup.render at 8
renderCore(h,varargin{:});

Error in ==> renderCore at 109
render(hChild, childGraphicalParent);

Error in ==> uimgr.uigroup.render at 8
renderCore(h,varargin{:});

Error in ==> renderCore at 109
render(hChild, childGraphicalParent);

Error in ==> uimgr.uigroup.render at 8
renderCore(h,varargin{:});

Error in ==> uiscopes.Framework.Framework>localRender at 432
render(this.UIMgr);

Error in ==> uiscopes.Framework.Framework at 104
localRender(this);

Error in ==> uiscopes.new at 22
hScope = uiscopes.Framework(hScopeCfg, varargin{:});

Error in ==> implay at 55
obj = uiscopes.new(hScopeCfg);

[omegayen]

"Hannes " <kig...@gmail.com> wrote in message <h8lemm$78l$1...@fred.mathworks.com>...

I would like to do this as well. was this ever addressed?

[Martin]

"Hannes " <kig...@gmail.com> wrote in message <h8lemm$78l$1...@fred.mathworks.com>...

I had the need for the same thing and after reading your post explored the properties of the implay object and her is what I came up with. I created an function that creates and implay object and sets the appropriate properties programmatically. Here is the source code of my function:

function [handle] = ImplayWithMap(frames, fps, limits)
%ImplayWithMap Calls the implay function and adjust the color map
% Call it with 3 parameters:
% ImplayWithMap(frames, fps, limits)
% frames - 4D arrray of images
% fps - frame rate
% limits - an array of 2 elements, specifying the lower / upper
% of the liearly mapped colormap
% Returns a nadle to the player
%
% example:
% h = ImplayWithMap(MyFrames, 30, [10 50])


handle = implay(frames, fps);
handle.Visual.ColorMap.UserRangeMin = limits(1);
handle.Visual.ColorMap.UserRangeMax = limits(2);
handle.Visual.ColorMap.UserRange = 1;



I work with grayscale images so this works for me. Not sure if it will work with RGB images.

Martin

[Daniel Hornung]

> handle = implay(frames, fps);
> handle.Visual.ColorMap.UserRangeMin = limits(1);
> handle.Visual.ColorMap.UserRangeMax = limits(2);
> handle.Visual.ColorMap.UserRange = 1;
>
>
>
> I work with grayscale images so this works for me. Not sure if it will work with RGB images.

This works to change the colormap:

handle.Visual.ColorMap.MapExpression = 'jet';