Avoiding coloured pixels in text

Question

Carl Ionstion 2019-11-14

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/491053-avoiding-coloured-pixels-in-text

关闭： MATLAB Answer Bot 2021-8-20

Hello

When I add text to a graph, text color is not perfect. For example, if it's blue, when you zoom it there are small orange pixels.

How can I avoid this or change this colormap?

Thanks

2 个评论
显示无隐藏无

Guillaume 2019-11-14

编辑：Guillaume 2019-11-14

That's the typical behaviour of antialising and is performed so that the edges of the text appear smooth. Why is this a problem anyway?

Carl Ionstion 2019-11-15

I need it smoothed in monochrome because another program will use them and it's color based and it gets crazy.

请先登录，再回答此问题。

Answer 1

KALYAN ACHARJYA 2019-11-14

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/491053-avoiding-coloured-pixels-in-text#answer_401468

在 MATLAB Online 中打开

Chnage the color of Text, there are multiple features to change the color of the text

RGB = insertText(I,position,text_str,'FontSize',18,'BoxColor',box_color,'BoxOpacity',0.4,'TextColor','white');

Detail here

2 个评论
显示无隐藏无

Carl Ionstion 2019-11-14

Thanks, but the problem is the same, when you zoom the image the colormap used for the text is full of pastel colors and, even if you are using the "blue" color, zooming to a pixel level shows it. I need to change the colorpam used for dithering the text.

KALYAN ACHARJYA 2019-11-14

If you could share the figure, it may help to illustrates easily.

Answer 2

Carl Ionstion 2019-11-14

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/491053-avoiding-coloured-pixels-in-text#answer_401515

Sure. As you can see, when you zoom it it's like a disco.

text(0.02 , 0.5 , 'E.On: Electric Water'] , 'FontSize', 8, 'FontWeight','bold','FontName','Century Gothic', 'Color',double([20 35 124])/255);

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Image Analyst 2019-11-14

What makes you think it's MATLAB doing it instead of the operating system or your video adapter?

Answer 3

Carl Ionstion 2019-11-15

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/491053-avoiding-coloured-pixels-in-text#answer_401636

Probably is has something to do with the operating system, but since there are programs that do that like Matlab and R and programs that don't do that, like Excel, there must be a way to solve it.