[ADV7282A-M] Further details on I2P conversion.

Question

Hi, 
 I have some questions about more details of I2P conversion of ADV7282A-M. 
 I had asked similar question about this on the following Engineer Zone thread: [ADV7282A-M] More details of the I2P interpolation. ez.analog.com/.../adv7282a-m-more-details-of-the-i2p-interpolation Question and your answer: Does it mean linear interpolation? (Does it mean that line2 is interpolated by linear?) Is it the way to generate line 2 from average of line 1 and line 3? YES, linear interpolation will generate an new scan line between two input scan lines, & You can get the more details of linear interpolation in the "video-demy5.pdf" . outn = (inn&ndash;1 + inn+1) / 2 
 But it seems that the I2P interpolation is not only "outn = (inn&ndash;1 + inn+1) / 2". 
 I summarized the questions to an attached file "ADV7282A_M_I2P_Conversion_Questions.xlsx". Please refer it. 
 Thank you! Best regards. Tamu 
 XLSX

PoornimaSubramani · Accepted Answer

Hi Tamu San, 
 ADV7280 related manuals does not contain any details about edge adaptive technology but this technology details we got it from Internet. 
 In edge adaptive processing where pixels are interpolated along an edge to remove the appearance of "jaggies" (jagged edges) and here multiple edges are filtered to get the better video quality, So it seems the edge adaptive technology function has multi-tap filtering & this might be the reason where multiple lines get affected from bottom line. 
 Note: Typically here, Multiple edges are filtered along to determine which one is the strongest. As the number of detection edges increases, so does the video quality. Therefore, the proper selection of directions is critical to achieving the highest image quality, with special attention being paid to shallow or low-angle directions. The result is sharp detail with less flicker and fewer artifacts. 
 
 Thanks, 
 Poornima)

PoornimaSubramani · Answer

Hi Tamu San, 
 Edge adaptive seems to be an inbuilt technology for I2P functionality So i don't think we can disable it. 
 But we can disable the other filtering registers like Chroma filter, Luma Filter, Chroma Transient Improvement, Digital Noise Reduction and Luma Peaking Filter, and Comb filter. 
 
 Thanks, 
 Poornima

Partner Forums

Partner Libraries

[ADV7282A-M] Further details on I2P conversion.