Camera2 API Set Custom White Balance & Temperature Color
<p>I'm trying to set a custom value for the White Balance &amp; temperature color in my camera app. I'm using camera2 API and I'm trying different ways to set this value. I found a method from a excel file to get the right RGB Temperature matrix [Red,Green,Blue] from the White Balance Value between 100 and 100.000. </p>

<p>I attached this method to a Seekbar and its working fine, my problem appear when I try to focus something white, then it becomes pink. Any kind of light looks like a pink torch in the screen. </p>

<p><a href="https://i.stack.imgur.com/vs1kD.jpg" rel="noreferrer"><img src="https://i.stack.imgur.com/vs1kD.jpg" alt="enter image description here"></a></p>

<p>I'm setting the values in this way:</p>

<pre><code>mPreviewRequestBuilder.set(CaptureRequest.COLOR_CORRECTION_MODE, CaptureRequest.COLOR_CORRECTION_MODE_TRANSFORM_MATRIX);

RggbChannelVector rggb = getTemperatureVector(seekBackSelectedTemperature);

mPreviewRequestBuilder.set(CaptureRequest.COLOR_CORRECTION_GAINS, myRggbChannelVector);
</code></pre>

<p>In other way, my method to get the matrix is this one:</p>

<pre><code> public static RggbChannelVector getTemperatureVector (int WhiteBalanceValue){


    float InsertTemperature = WhiteBalanceValue;
    float temperature = InsertTemperature / 100;
    float red;
    float green;
    float blue;

    //Calculate red

    if (temperature &lt;= 66)
        red = 255;
    else {
        red = temperature - 60;
        red = (float) (329.698727446 * (Math.pow((double) red, -0.1332047592)));
        if (red &lt; 0)
            red = 0;
        if (red &gt; 255)
            red = 255;
    }


    //Calculate green
    if (temperature &lt;= 66) {
        green = temperature;
        green = (float) (99.4708025861 * Math.log(green) - 161.1195681661);
        if (green &lt; 0)
            green = 0;
        if (green &gt; 255)
            green = 255;
    } else
        green = temperature - 60;
    green = (float) (288.1221695283 * (Math.pow((double) red, -0.0755148492)));
    if (green &lt; 0)
        green = 0;
    if (green &gt; 255)
        green = 255;


    //calculate blue
    if (temperature &gt;= 66)
        blue = 255;
    else if (temperature &lt;= 19)
        blue = 0;
    else {
        blue = temperature - 10;
        blue = (float) (138.5177312231 * Math.log(blue) - 305.0447927307);
        if (blue &lt; 0)
            blue = 0;
        if (blue &gt; 255)
            blue = 255;
    }
    RggbChannelVector finalTemperatureValue = new RggbChannelVector(red/255,(green/255)/2,(green/255)/2,blue/255);
    return finalTemperatureValue;
}
</code></pre>

<p>Maybe it's because the method of my CaptureRequest is not correct, but I don't find a way to fix it.</p>