i.MX ProcessorsのトピックAbout CSC(Color Space Conversion) in eLCDIF / i.MX8M

About CSC(Color Space Conversion) in eLCDIF / i.MX8M

george — Mon, 18 Jan 2021 07:05:13 GMT

Hi all,

Our product uses MIPI-LCD via eLCDIF.

We see slight color deviation depending on the type of LCD panel.

According to the reference manual, it seems that the CSC of eLCDIF can be used.

However, I couldn't find the implementation in the current BSP.

I would like to set the coefficients in the LCDIF_CSC_COEFF0 ~ LCDIF_CSC_COEFF4 registers, so please tell me the calculation formula for deriving the coefficient.

Best Regards,

George

Re: About CSC(Color Space Conversion) in eLCDIF / i.MX8M

b36401 — Mon, 18 Jan 2021 07:56:20 GMT

These registers are described in chapters 13.2.5.18 to 13.2.5.22 "RGB to YCbCr 4:2:2 CSC CoefficientX Register (LCDIF_CSC_COEFFX)" of i.MX 8M Reference Manual.
And there you can find calculation formula.

Re: About CSC(Color Space Conversion) in eLCDIF / i.MX8M

george — Mon, 18 Jan 2021 08:16:21 GMT

Dear @b36401,

I apologize for not looking closely at RM.

As you say, I found a description of the formula in each register description.

Thanks,

George