Windows provides user-level calibration tools:
Corrects for physical manufacturing tolerances, screen-to-digitizer misalignment, and fixed orientation offsets. It relies on a 3-point or 4-point affine transformation matrix . kmdf hid minidriver for touch i2c device calibration
Implementing a software-based low-pass or Kalman filter directly in the KMDF driver to smooth out coordinate jitter. Device (TCH0) Name (_HID, "YOUR0001") Name (_CID, "PNP0C50")
Device (TCH0) Name (_HID, "YOUR0001") Name (_CID, "PNP0C50") // HID over I2C standard Method (_DSM, 4, Serialized) // UUID for Touch Calibration Data If (LEqual (Arg0, ToUUID ("XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX"))) If (LEqual (Arg1, Zero)) // Revision 0 If (LEqual (Arg2, One)) // Function 1: Get Calibration Coefficients Return (Package() 0x00010000, // Coefficient A (Fixed-point or integer scaled) 0x00000000, // Coefficient B 0x00000020, // Coefficient C (Offset X) 0x00000000, // Coefficient D 0x00010000, // Coefficient E 0x00000040 // Coefficient F (Offset Y) ) Return (Buffer (One) 0x00 ) Use code with caution. KMDF Implementation: Evaluating _DSM Device (TCH0) Name (_HID