Inpaint

Intel® Integrated Performance Primitives (Intel® IPP) Developer Guide and Reference

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ID 790148

Date 10/31/2024

Version

Public

Visible to Intel only — GUID: GUID-663C2697-F60B-4B52-898E-46211C37E279

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Inpaint

MODIFIED API. Restores unknown image pixels.

Syntax

IppStatus ippiInpaint_8u_C1R(const Ipp8u* pSrc, int srcStep, Ipp8u* pDst, int dstStep, IppiSize roiSize, IppiInpaintState_8u_C1R* pState, Ipp8u* pBuffer);

IppStatus ippiInpaint_8u_C3R(const Ipp8u* pSrc, int srcStep, Ipp8u* pDst, int dstStep, IppiSize roiSize, IppiInpaintState_8u_C1R* pState, Ipp8u* pBuffer);

Include Files

ippcv.h

Domain Dependencies

Headers: ippcore.h, ippvm.h, ipps.h, ippi.h

Libraries: ippcore.lib, ippvm.lib, ipps.lib, ippi.lib

Parameters

pSrc: Pointer to the source image ROI.
srcStep: Distance in bytes between starts of consecutive lines in the source image.
pDst: Pointer to the destination image ROI.
dstStep: Distance in bytes between starts of consecutive lines in the destination image.
roiSize: Size of the image ROI in pixels.
pState: The pointer to the inpainting structure.
pBuffer: Pointer to the work buffer.

Description

IMPORTANT:

The API of this function has been modified in Intel IPP 9.0 release.

Before using this function, compute the size of the state structure and work buffer using InpaintGetSize and initialize the structure using InpaintInit.

This function operates with ROI (see Regions of Interest in Intel IPP).

This function reconstructs damaged part of the image, or removes a selected object (see Figure “Image Inpainting”). The image part to restore is defined by the mask that is created when the inpainting structure pState is initialized by the InpaintInit function. Different distant transforms can be used, but the Fast Marching method (ippiFastMarching) provides the best results. The order of pixel restoration is defined by the distance through the initialization the inpainting structure pState by the InpaintInit function. Pixels are restored in according to the growing of their distance value. When a pixel is inpainted, it is treated as the known one.

Two algorithms of direct inpainting are supported (controlled by the parameter flags of the InpaintInit function):

image restoration of the unknown pixel by the weighted sum of approximations by known pixels in the neighborhood (flags = IPP_INPAINT_TELEA) [Telea04],
image restoration based on the Navier-Stokes equations (flags = IPP_INPAINT_NS) [Bert01].

The inpainting structure pState can be used to perform restoration of several different images of the same size roiSize.

Image Inpainting

Return Values

ippStsNoErr	Indicates no error. Any other value indicates an error or a warning.
ippStsNullPtrErr	Indicates an error when one of the specified pointers is NULL.
ippStsSizeErr	Indicates an error when roiSize has a field with zero or negative value, or if differs from the corresponding parameter that is specified when the inpainting structure is initialized by InpaintInit.
ippStsStepErr	Indicates an error condition if srcStep or dstStep is less than roiSize.width * < pixelSize>.

Example

/*******************************************************************************
* Copyright 2015 Intel Corporation.
*
*
* This software and the related documents are Intel copyrighted materials, and your use of them is governed by
* the express license under which they were provided to you ('License'). Unless the License provides otherwise,
* you may not use, modify, copy, publish, distribute, disclose or transmit this software or the related
* documents without Intel's prior written permission.
* This software and the related documents are provided as is, with no express or implied warranties, other than
* those that are expressly stated in the License.
*******************************************************************************/

// A simple example of restoring damaged image area by direct inpainting
// using Intel(R) Integrated Performance Primitives (Intel(R) IPP) functions:
//     ippiFastMarchingGetBufferSize_8u32f_C1R
//     ippiFastMarching_8u32f_C1R
//     ippiInpaintGetSize
//     ippiInpaintInit_8u_C1R
//     ippiInpaint_8u_C1R

#include <stdio.h>
#include "ipp.h"

#define WIDTH  128  /* Image width*/
#define HEIGHT 128  /* Image height*/
#define RADIUS 3.f  /* Neighborhood radius*/
#define INPAINT_FLAGS IPP_INPAINT_NS /* Specifies algorithm for image inpainting*/

/* Next two defines are created to simplify code reading and understanding */
#define EXIT_MAIN exitLine:                                  /* Label for Exit */
#define check_sts(st) if((st) != ippStsNoErr) goto exitLine; /* Go to Exit if Intel(R) IPP function returned status different from ippStsNoErr */

/* Results of ippMalloc() are not validated because Intel(R) IPP functions perform bad arguments check and will return an appropriate status  */

int main(void)
{
    IppStatus status = ippStsNoErr;

    Ipp8u   *pSrc = NULL, *pDst = NULL;     /* Pointers to source/destination images */
    int      srcStep = 0,  dstStep = 0;     /* Steps, in bytes, through the source/destination images */
    IppiSize roiSize = { WIDTH, HEIGHT };   /* Size of source/destination ROI in pixels */

    Ipp8u *pMask = NULL;    /* Pointer to mask image */
    int    maskStep;        /* Step, in bytes, through the mask image */

    Ipp32f *pFMDist      = NULL; /* Pointer to distances image */
    int     fmDistStep   = 0;    /* Step, in bytes, through the distances image */
    Ipp8u  *pFMBuffer    = NULL; /* Pointer to the Fast marching work buffer */
    int     fmBufferSize = 0;

    IppiInpaintState_8u_C1R *pInpState = NULL; /* Pointer to inpainting structure */
    Ipp8u *pInpBuffer    = NULL; /* Pointer to the Inpaint work buffer */
    int    inpBufferSize = 0;
    Ipp8u *pInpStateBuf  = NULL; /* Pointer to the Inpaint structure buffer */
    int    inpStateSize  = 0;

    pSrc  = ippiMalloc_8u_C1(roiSize.width, roiSize.height, &srcStep);
    pDst  = ippiMalloc_8u_C1(roiSize.width, roiSize.height, &dstStep);
    pMask = ippiMalloc_8u_C1(roiSize.width, roiSize.height, &maskStep);

    pFMDist = ippiMalloc_32f_C1(roiSize.width, roiSize.height, &fmDistStep);

    /* Compute the temporary work buffer size for Fast Marching */
    check_sts( status = ippiFastMarchingGetBufferSize_8u32f_C1R(roiSize, &fmBufferSize) )
    
    pFMBuffer = ippsMalloc_8u(fmBufferSize);

    /* Calculate distance by the Fast Marching Method */
    check_sts( status = ippiFastMarching_8u32f_C1R(pMask, maskStep, pFMDist, fmDistStep, roiSize, RADIUS, pFMBuffer) )

    /* Calculate State and work buffer sizes for Inpaint */
    check_sts( status = ippiInpaintGetSize(pMask, maskStep, roiSize, RADIUS, INPAINT_FLAGS, ippC1, &inpStateSize, &inpBufferSize) )

    /* Memory allocation for State and work buffer */
    pInpStateBuf = ippsMalloc_8u(inpStateSize);
    pInpBuffer   = ippsMalloc_8u(inpBufferSize);

    /* Initialize the Inpaint State for direct methods of image inpainting */
    check_sts( status = ippiInpaintInit_8u_C1R(&pInpState, pFMDist, fmDistStep, pMask, maskStep, roiSize, RADIUS, INPAINT_FLAGS, pInpStateBuf, pInpBuffer) )

    /* Restores damaged image area by direct inpainting */
    check_sts( status = ippiInpaint_8u_C1R(pSrc, srcStep, pDst, dstStep, roiSize, pInpState, pInpBuffer) )

EXIT_MAIN
    ippsFree(pFMBuffer);
    ippsFree(pFMDist);
    ippsFree(pInpBuffer);
    ippiFree(pInpStateBuf);
    ippiFree(pSrc);
    ippiFree(pDst);
    ippiFree(pMask);
    printf("Exit status %d (%s)\n", (int)status, ippGetStatusString(status));
    return (int)status;
}

Parent topic: Image Inpainting

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Intel® Integrated Performance Primitives (Intel® IPP) Developer Guide and Reference

Inpaint

Syntax

Include Files

Domain Dependencies

Parameters

Description

Return Values

Example

See Also