Mlx90640 infrared thermal imager temperature sensor module development notes (6)

MLX90640 Infrared thermal imager temperature sensor module development notes （ 6、 ... and ） Infrared image pseudo color coding

Hebei stable control technology Co., Ltd MLX90640 Infrared thermal imager temperature sensor module

What is infrared imaging pseudo color coding

The ultimate goal of infrared imaging is to use images to show temperature changes , And the outline and shape of objects with different heat can be distinguished by color . that , What color is used to represent what temperature ？ Are there any standards and specifications ？

At the beginning, this problem was also bottomless , Because I'm not a professional in infrared imaging , We can only look up information everywhere to understand the relationship between temperature and color , The following conclusions are basically obtained ：

（1） There is no absolute correspondence between temperature and color , No one requires that infrared imaging must use any color to represent a certain temperature , This correspondence is completely decided by the designer .

（2） Different application fields and industries have different purposes , Will carry out some temperature and color research , Then a suitable gradient is used to highlight some thermal elements of special concern .

（3） Color coding is mostly gradient . Here are several different color codes

MLX90640 Infrared thermal imager temperature sensor gray

in addition , Others have suggested that “ Conform to human physiology ” Make people look more “ comfortable ” Of HIS colour

MLX90640 Infrared thermal imager temperature sensor false color

The method of changing temperature to color

（1） First, assume the upper and lower limits of the temperature range and convert the actual temperature data into 0~255 Value between

（2） Use the converted value to substitute into the following pseudo color coding calculation function , Generate pseudo color

// Fake color 1

procedure GrayToPseColor(grayValue:Integer; var colorR,colorG,colorB:Ingeger);

Begin

colorR:=Abs(0-grayValue);

colorG:=Abs(127-grayValue);

colorB:=Abs(255-grayValue);

End;

MLX90640 Display of infrared thermal imager temperature sensor achievements