色值映射

tempColor.java

Bitmap image = Bitmap.createBitmap(32, 32, Bitmap.Config.ARGB_8888);
int[] list = GetSingleColorList(Color.rgb(0, 0, 255), Color.rgb(255, 0, 0), (int) (maxtemp - mintemp) + 1);

//根据温度获取每个点的颜色
for (int i = 0; i < data.length; i++) {
    int c = GetColor(list, data[i], maxtemp, mintemp);
    image.setPixel(i % 32, i / 32, c);
}

BitmapUtil.saveBitmap(this, "tmp.jpg", image);

// HTPA32x32 dR2L2_1 / HTPA32x32 dR2L5_0  IR_CAMERA 模块温度转换
private double[] processTemperatureArray(byte[] recByteArray) {
    double[] recTempArray = new double[1024];
    if (recByteArray != null && recByteArray.length >= 2055 && recByteArray[0] == (byte) 0xE1) {
        for (int i = 0; i < 1024; i++) {
            int temp = (recByteArray[i * 2 + 1] << 8) + (recByteArray[i * 2 + 2] & 0xFF);
            recTempArray[i] = (temp - 2731) / 10f;
        }
    }
    return recTempArray;
}


public int[] GetSingleColorList(int srcColor, int desColor, int count) {
      int[] colorFactorList = new int[count];
      int redSpan = Color.red(desColor) - Color.red(srcColor);
      int greenSpan = Color.green(desColor) - Color.green(srcColor);
      int blueSpan = Color.blue(desColor) - Color.blue(srcColor);
      for (int i = 0; i < count; i++) {
          int color = Color.rgb(Color.red(srcColor) + (int) ((double) i / count * redSpan),
                  Color.green(srcColor) + (int) ((double) i / count * greenSpan), Color.blue(srcColor) + (int) ((double) i / count * blueSpan));
          colorFactorList[i] = color;
      }
      return colorFactorList;
}

public int GetColor(int[] list, double val, double max, double min) {
      return list[(int) (val - min)];
}