2009/8/27 Matthias Schwarz <matthias.schw@xxxxxxxxxxxxxx>: > Hi all, > > i just wondered how the camera interface's, especially the previewer > module's CFA coefficients are setup on OMAP3530. > > The TRM also does not give too much information about it: >> >> In the generic mode, CFA interpolation is implemented using programmable >> filter coefficients that operate >> on a 5x5 grid: >> · Each coefficient is coded in S8Q6 format. >> · Each output color , G, and B) has its own set of coefficients. >> · There are 4 phases. Each pixel is associated with a phase. >> · Different sets of filter coefficients are provided, depending on the >> tendency (gradient in the data: >> horizontal, vertical, or neutral). >> · So there are 3 color x 4 phase x 3 tendencies x 16 taps = 576 >> coefficients (each coefficient is 8 bits >> wide). >> Note: Coefficients are based on sensor type. However, users can use a >> different methods of >> defining an optimal coefficient set. > > Also drivers/media/video/isp/cfa_coef_table.h does not provide information > on what the inserted values mean and how they are arrenged. > > My question now is: is there anyone on the list who would provide me with > information on how to compose these coefficients correctly? > > Thank you very much, > Matthias > What i guess from no answers is that this part clearly lacks information. I also created a thread in TI's e2e forums: http://e2e.ti.com/forums/t/9565.aspx Best regards, Matthias -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
