52.6.8 Color Correction (CC) Module

RGB color correction is used to compensate for cross color bleeding in the filter used with the image sensor. The module samples the cfa_data[35:0] 36-bit bus when cfa_valid is asserted and generate a cc_data[35:0] 36-bit wide bus and a cc_valid signal.

Figure 52-22. CC Block Diagram

There are three {gain, offset} sets for color component R, G, B.

ISC_CC_CTRL.ENABLE CC_DATA Slice Value
0 cc_data[35:24] cfa_data[11:0]
cc_data[23:12] cfa_data[11:0]
cc_data[11:0] cfa_data[11:0]
1 cc_data[35:24] R=clipped(sum(cfa_data_x * gain_Rx) + offset_R)
cc_data[23:12] G=clipped(sum(cfa_data_x * gain_gx) + offset_g)
cc_data[11:0] B=clipped(sum(cfa_data_x * gain_Bx) + offset_B)
R G B   = RRGAIN RGGAIN RBGAIN GRGAIN GGGAIN GBGAIN BRGAIN BGGAIN BBGAIN   × cfa_data[35:24] cfa_data[23:12] cfa_data[11:0]   + ROFST GOFST BOFST