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TNETV1644ZDU6 Datasheet(PDF) 217 Page - Texas Instruments |
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TNETV1644ZDU6 Datasheet(HTML) 217 Page - Texas Instruments |
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217 / 306 page  6.10.1.5 Histogram TMS320DM6437 Digital Media Processor www.ti.com SPRS345D – NOVEMBER 2006 – REVISED JUNE 2008 Table 6-33. H3A Register Descriptions (continued) 0x01C7 142C AFCOEFF098 IIR Filter Coefficient Data for SET 0 0x01C7 1430 AFCOEFF0010 IIR Filter Coefficient Data for SET 0 0x01C7 1434 AFCOEF110 IIR Filter Coefficient Data for SET 1 0x01C7 1438 AFCOEF132 IIR Filter Coefficient Data for SET 1 0x01C7 143C AFCOEFF154 IIR Filter Coefficient Data for SET 1 0x01C7 1440 AFCOEFF176 IIR Filter Coefficient Data for SET 1 0x01C7 1444 AFCOEFF198 IIR Filter Coefficient Data for SET 1 0x01C7 1448 AFCOEFF1010 IIR Filter Coefficient Data for SET 1 0x01C7 144C AEWWIN1 Configuration for AE/AWB Windows 0x01C7 1450 AEWINSTART Start Position for AE/AWB Windows 0x01C7 1454 AEWINBLK Start Position and Height for Black Line of AE/AWB Windows 0x01C7 1458 AEWSUBWIN Configuration for Subsample Data in AE/AWB Window 0x01C7 145C AEWBUFST SDRAM/DDRAM Start Address for AE/AWB Engine 6.10.1.4.1 Auto Focus (AF) Engine The following features are supported by the Auto Focus (AF) Engine. • Peak Mode in a Paxel (a Paxel is defined as a two dimensional block of pixels). • Accumulate the maximum Focus Value of each line in a Paxel • Accumulation/Sum Mode (instead of Peak mode). • Accumulate Focus Value in a Paxel. • Up to 36 Paxels in the horizontal direction and up to 128 Paxels in the vertical direction. • Programmable width and height for the Paxel. All paxels in the frame will be of same size. • Programmable red, green, and blue position within a 2x2 matrix. • Separate horizontal start for paxel and filtering. • Programmable vertical line increments within a paxel. • Parallel IIR filters configured in a dual-biquad configuration with individual coefficients (2 filters with 11 coefficients each). The filters are intended to compute the sharpness/peaks in the frame to focus on. 6.10.1.4.2 Auto Exposure (AE) and Auto White Balance (AWB) Engine The following features are supported by the Auto Exposure (AE) and Auto White Balance (AWB) Engine. • Accumulate clipped pixels along with all non-saturated pixels. • Up to 36 horizontal windows. • Up to 128 vertical windows. • Programmable width and height for the windows. All windows in the frame will be of same size. • Separate vertical start coordinate and height for a black row of paxels that is different than the remaining color paxels. • Programmable Horizontal Sampling Points in a window. • Programmable Vertical Sampling Points in a window. The histogram module accepts raw image/video data and bins the pixels on a value (and color separate) basis. The value of the pixel itself is not stored, but each bin contains the number of pixels that are within the appropriate set range. The source of the raw data for the histogram is typically a CCD/CMOS sensor (via the CCDC module) or optionally from DDR2. The following features are supported by the histogram module. • Up to four regions/areas. • Separate horizontal/vertical start and end position for each region. • Pixels from overlapping regions are accumulated into the highest priority region. The priority is: region0 Submit Documentation Feedback Peripheral Information and Electrical Specifications 217 |
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