Image interpolation

[sundeepgoel72]

Hi,

Is there an interpolation function available for resizing (upscale) an image. My use case is 32x24 temperature grid from MLX90640 sensor - which I then display on 320x240 TFT after applying a factor of 7 i.e. each temperature value gets converted into 7x7 rectangle on the display.

Was wondering if there are any good interpolation libraries which can be applied on the tft image or on a two dimensional array to get a smooth image based on neighboring values?

regards,

[Bodmer]

No, but I did create a sketch for that sensor that upscaled the image using linear interpolation. I will post it in the next few days.

[sundeepgoel72]

thank you

[sundeepgoel72]

thanks. Have started implementing the code here :

[Bodmer]

The complete sketch is attached. This is written for a 320x480 display. The upscaled image is 320x240, in addition the raw sensor image is shown and one with a filter applied.
MLX90640_Interp.zip