Can i use ipp achieve a image overlay another image 's special region (The iamge is YV12)

[zac_2000]

The is Image 1

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|AAAAAAAA |

| |

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Image2

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|A|

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The Dest Image can be

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|AAAAAAAA |

| |

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It Can't paste image.I only use this;

Thanks in advance.

[Vladimir_Dudnik]

Do you want to copy one image (say some small sprite) into another image (say, bigger, for example background)?

Regards,
Vladimir

[zac_2000]

Yes.The Image is YV12 PixelFormat.

[Vladimir_Dudnik]

We do not have such a special variant of IPP function, but you should be able to use just ordinary ippiCopy function, just need to determine correct sizes of data chunks

Vladimir

[zac_2000]

Y = 0.257*R' + 0.504*G' + 0.098*B' + 16
Cb = -0.148*R' - 0.291*G' + 0.439*B' + 128
Cr = 0.439*R' - 0.368*G' - 0.071*B' + 128

Image1 is only character'A' ( Color is Red) BackGroud color is Black.

I make Image2's correspounding position value is Image1's.

I found In Character'A' area, there is not only red, but some transparent.

I thinkthe wrong maybe the Cb,Cr use by 4 pixels.I Set the value is( -0.148*255 + 128, 0.439*255 + 128).

I use rgb565 is right,but itexhaust more time!

My English is poor, my description may be no clear!

Thanks in advance!

[Vladimir_Dudnik]

We do not have copy function for RGB565 data, but if you use RGB24 it is possible to copy small image into arbitrary point of another image.

Vladimir