yiq | Returns white when a color is dark and black when a color | Theme library

I'm trying to do the histogram equalization in a few steps:

• if it's gray color then I do the calculation

• if it's RGB I'm using other functions to convert it to YIQ coloring then doing the calculation on the Y level after that converting it back to RGB.

I'm not allowed to use any lib functions that will do it I have to make the equalization function by myself

So far it looks like it's working for the gray-colored images but for RGB it's giving me messed up results.

code:

I know that in JavaScript exists a function which changes the contrast depending on which color is currently selected:

When I search for YUV/YCbCr conversion articles, the articles always include how the conversion matrix is generated.
I'm trying to understand how the YIQ conversion matrix is generated, but I can't find any sources for it; only the conversion matrix pre-baked.
Can anyone explain how the YIQ matrix is created and how it differs from YUV/YCbCr?

I am trying to convert an SCSS file into CSS. My intention is to convert the colors defined in SCSS file into hex codes in CSS file. I tried, Prepros and Koala. Both failed to gave a colours.css file from colours.scss. But it was 0 bytes file.

I am using Ubuntu 18.04.

Now I tried command line after installing SASS through npm.

For a class, I need to transform RGB image into YIQ. We have been told that the conversion can be made by:

I started to write a messy code with loops to have the matrix multiplication and then I found out a function

I am trying to customize the badge class in Bootstrap 4. What I am trying to achieve is to display all badges with an outline (similar to .btn-outline-*). Right now, I am (naively) trying to do this by "overriding" the mixing in a separate stylesheet as follows:

I'm new to android studio developer, I'm looking to convert an image from RGB color space to YIQ. My app consist of taking an image as input and then transferring the image to YIQ, so I used Core.split to take the Red, Green and Blue channels from the image and then applying the equations but I couldn't apply the multiplication of the matrix with float so I used the scalar type and still stuck.

I would like to create a new button style in Bootstrap 4 with a white (#fff) text color. Mixin button-variant automatically sets the text color based on the background color. How can I use this mixin and set the color at the same time, without modifying _buttons.scss?

custom.scss

I have the textobjects-user and textobject-quotes plugin installed, using vim 8. Those let me work with multi-line strings, so I can place the cursor inside a multi-line quoted string and diq to delete or yiq to yank. Those text objects work so I know the plugin works.

I tried to define a simple key remap so I could yank the contents of a quoted string, open it in a new split, and strip excess whitespace: