Roger Breton
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Awarded to Roger Breton on 11 Jan 2022
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Feeds
Frage
Scaling XYZ 3D data linearly
I am in the pursuit of "simulating" the readings of a spectrophometer equipped with a polarizing filter. I start with a printed ...
3 Tage vor | 1 Antwort | 0
1
AntwortFrage
Getting screen resolution on Windows 11
Are there other functions I can use to get the monitor resolution on Windows 11? I use this code: set(0, 'units', 'pixels'); % ...
6 Monate vor | 1 Antwort | 1
1
AntwortFrage
appDesigner and ButtonDownFn does not work?
Documentation states that any Matlab object can respond to click events provided they meet certain conditions. Capturing Mouse ...
6 Monate vor | 0 Antworten | 0
0
AntwortenFrage
How can I show where an image was clicked from a scatter3 plot?
I created a small app using appDesigner: It allows loading an RGB image and displaying a CIE Lab scatter plot in 3D. I attach...
6 Monate vor | 1 Antwort | 0
1
AntwortFrage
Better "probabilities"?
I created a small script in which I present two random colors to the user. See attached script. As you can see, on the left, ...
6 Monate vor | 1 Antwort | 1
1
AntwortFrage
Unable to display uicontrol within a given panel?
I figure I split my figure width in two uipanels, in the hope of having better control over my components, in a script (Soon, I ...
9 Monate vor | 1 Antwort | 0
1
AntwortFrage
Need help with Tooltip display?
I have a script that plots CIE Lab values in 3D: Works great. But as you can see, the tooltip displays the XYZ value. Instea...
9 Monate vor | 1 Antwort | 0
1
AntwortFrage
Custom RGB color space
I am plottiing the measured Lab colors of a ColorChecker SG chart in 3D as you can see below: To obtain the "gamut surface", ...
9 Monate vor | 1 Antwort | 0
1
AntwortFrage
ColorChecker function does not work?
I am trying to follow the example here: Comparison of Auto White Balance Algorithms - MATLAB & Simulink (mathworks.com) I use ...
10 Monate vor | 0 Antworten | 0
0
AntwortenNo 'CData' property on bar graph
Does not work for me? I use: data = [1 2 3 4]; figure BarMatrix = [1 2 3 4]; b = bar(BarMatrix,1,'LineStyle','none'); CDa...
10 Monate vor | 0
Frage
Unable to combine plots?
I created a monster of a script which satisfies my research needs for the moments but I am struggling with the subplots. You wi...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
Can Subplots have own colormaps?
I must be missing something obvious.. but I can get each subplots colorbars to plot with its own colormap? Here is my code: RGB...
mehr als ein Jahr vor | 1 Antwort | 0
1
AntwortFrage
Extract the "overall colors" of an image to apply another?
I've been meaning to show my students a way to "borrow" the color palette of an image to apply to another? Take the Mona Lisa, ...
mehr als ein Jahr vor | 3 Antworten | 0
3
AntwortenFrage
How to apply color to histograms?
My goal is to analyze RGB images based on Chroma and Hue. For this purpose, I first convert from RGB to CIE Lab, and then from C...
etwa 2 Jahre vor | 2 Antworten | 0
2
AntwortenFrage
Rearrange matrix terms is a challenge
I am not finding exactly the right parameters to rearrange the terms of a matrix? It starts off as an RGB image I later convert ...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
How do I add "color" to an image?
I'm looking for ways to better understand color mixing theory. Suppose I start of an RGB image? Suppose I want to color the whol...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Is it possible to "move" points in 3D?
I have this scatter3 graph, I'm generating from CIE Lab coordinates : Would it be too far-fetch to be able to select any poin...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Writing ICC profiles capbilities: can we save modified tags or is it limited to saving header only?
I am thinking about "editing" CMYK output profiles with Matlab. As you know, an output profile starts with a series of 'device'...
mehr als 2 Jahre vor | 0 Antworten | 0
0
AntwortenFix out-of-gamut RGB colors
I think I found a solution, alhough it is not elegant... : rawRGB = lab2rgb(Lab,'WhitePoint','d50') TempR = rawRGB(:,1...
mehr als 2 Jahre vor | 0
Frage
Fix out-of-gamut RGB colors
I'm going in circle... I have this code, which converts from Lab to RGB : rawRGB = lab2rgb(Lab,'WhitePoint','d50') Trouble i...
mehr als 2 Jahre vor | 2 Antworten | 0
2
AntwortenWhy are there two different "D50" white points? CIE vs ICC?
Got hold of CIE Publication 15.2:2004 and on Table T3, page 35, D50 is listed as 96.42 100.00 82.51. A fresh search in my stock...
mehr als 2 Jahre vor | 0
Frage
Why are there two different "D50" white points? CIE vs ICC?
I have this code going : wp_D50 = whitepoint('d50') % 0.9642 1.0000 0.8251 wp_D65 = whitepoint('d65') % 0.9505 1.00...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
How do I get rid of custom data tip?
I have this script which adds a custom data tip to my scatter3 graph : function txt = displayCoordinates(~, info) global...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortSearching through table using compound condition
It worked! Sorry for the newbie question. I'm sure there are far more elegant ways to do search a table for information... Will ...
mehr als 2 Jahre vor | 0
Frage
Searching through table using compound condition
I would leke to add a Munsell Notation readout capability to my script. Right now, when the student clicks a point in scatter3 g...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortFrage
Unable to control floating point display?
I have this result : There should be three Lab numbers on the third line but only L and a are showing, with two decimals of p...
mehr als 2 Jahre vor | 2 Antworten | 0
2
AntwortenHow could I display a "circle at the bottom of the figure? And color it along the way? To show Hue angles?
A final note. This project is far from over. It's getting all kinds of suggestions and usecases (by me). I enclose the code, if...
mehr als 2 Jahre vor | 0
Frage
Trouble with custom data tip function (event)
I am puzzled? I try to have a line drawn during the call to a custom text data tip function. Here is the "normal" response, whe...
mehr als 2 Jahre vor | 1 Antwort | 0
1
AntwortHow could I display a "circle at the bottom of the figure? And color it along the way? To show Hue angles?
I integrated the function into my script and it works like a charm. I may reduce the number of points from 1000 to 500 to speed ...
mehr als 2 Jahre vor | 0
Frage
How could I display a "circle at the bottom of the figure? And color it along the way? To show Hue angles?
Crazy idea. I know Matlab is calling OpenGL under the hood but I would not know how to go about adding these two pieces of geome...
mehr als 2 Jahre vor | 6 Antworten | 0
6
Antworten
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