ippiCopyConstBorder got wrong value

[adaTao]

Hi,

The wrong value I got after calling function ippiCopyConstBorder_32f_C1R.

Code Example:

Got Wrong Value:

This problem has been bothering me for two days, 

Thanks for any help！

[NoorjahanSk_Intel]

Hi,

Thanks for reaching out to us.

We looked into your code and made few changes to your code.

Since size of ipp32f is 4 Bytes, srcstep will be 32(i.e 8x4=32 Bytes) & dststep will be 28(i.e 7X4=28 Bytes).

where, 

srcStep = 8 (Distance in bytes between starts of consecutive lines in the source image.)

dstStep= 7 (Distance, in bytes, between the starting points of consecutive lines in the destination image.)

Could you please try the below code and let us know if it helps?

#include<iostream>
#include <stdio.h>
#include<ipp.h>
int main()
{
    Ipp32f src[8 * 4] = { 3.5, 3.5, 3.5, 3.0, 3.0, 8.0, 8.0, 8.0,
              3.0, 2.0, 1.0, 2.0, 3.0, 8.0, 8.0, 8.0,
              3.0, 2.0, 1.0, 2.0, 3.0, 8.0, 8.0, 8.0,
              3.0, 3.0, 3.0, 3.0, 3.0, 8.0, 8.0, 8.0 };
    Ipp32f dst[8 * 6]={0};
    IppiSize srcRoi = { 5, 4 };
    IppiSize dstRoi = { 7, 6 };
    int borderWidth = 1;
    int borderHeight = 1;
    int borderVal = 0;

    ippiCopyConstBorder_32f_C1R(src, 32, srcRoi, dst, 28, dstRoi, borderHeight, borderWidth, borderVal);
    for (int i = 0; i < 42; i++)
    {
        printf("%.1f ", dst[i]);
        if ((i + 1) % 7 == 0)
            printf("\n");

    }

}

Please find the below screenshot for the expected output.

Thanks & Regards,

Noorjahan.

[adaTao · Accepted solution]

Very appreciated for your reply! It works now.

[NoorjahanSk_Intel]

Hi,

Thanks for the confirmation.

As this issue has been resolved, we will no longer respond to this thread. If you need any additional information, please post a new question as this thread will no longer be monitored by Intel.

Thanks & Regards,

Noorjahan