FloodFill

Intel® Integrated Performance Primitives Developer Guide and Reference

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ID 790148

Date 11/07/2023

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FloodFill

Performs flood filling of connected area.

Syntax

Case 1: Operations on one-channel data

IppStatus ippiFloodFill_4Con_<mod>(Ipp<datatype>* pImage, int imageStep, IppiSize roiSize, IppiPoint seed, Ipp<datatype> newVal, IppiConnectedComp* pRegion, Ipp8u* pBuffer);

IppStatus ippiFloodFill_8Con_<mod>(Ipp<DataType>* pImage, int imageStep, IppiSize roiSize, IppiPoint seed, Ipp<datatype> newVal, IppiConnectedComp* pRegion, Ipp8u* pBuffer);

Supported values for mod:

8u_C1IR

16u_C1IR

32s_C1IR

32f_C1IR

Case 2: Operations on three-channel data

IppStatus ippiFloodFill_4Con_<mod>(Ipp<datatype>* pImage, int imageStep, IppiSize roiSize, IppiPoint seed, Ipp<datatype>* pNewVal, IppiConnectedComp* pRegion, Ipp8u* pBuffer);

IppStatus ippiFloodFill_8Con_<mod>(Ipp<DataType>* pImage, int imageStep, IppiSize roiSize, IppiPoint seed, Ipp<datatype>* pNewVal, IppiConnectedComp* pRegion, Ipp8u* pBuffer);

Supported values for mod:

8u_C3IR

16u_C3IR

32f_C3IR

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

pImage: Pointer to the ROI in the source and destination image (for the in-place operation).
imageStep: Distance in bytes between starts of consecutive lines in the image buffer.
roiSize: Size of the image ROI in pixels.
seed: Initial point.
newVal: Value to fill with for one-channel data.
pNewVal: Pointer to the vector containing values to fill with for three-channel data.
pRegion: Pointer to the connected components structure that stores information about the refilled area.
pBuffer: Pointer to the temporary buffer.

Description

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

This function performs flood filling of the group of connected pixels whose pixel values are equal to the value in the seed point. Values of these pixel is set to the newVal value.

The function requires a temporary buffer whose size should be computed with the function ippiFloodFillGetSize beforehand.

The functions with the “_4con” suffixes check 4-connected neighborhood of each pixel, that is, side neighbors. The functions with the “_8con” suffixes check 8-connected neighborhood of each pixel, that is, side and corner neighbors. See Figure Pixels Connectivity Patterns”.

Return Values

ippStsNoErr	Indicates no error. Any other value indicates an error or a warning.
ippStsNullPtrErr	Indicates an error condition if one of the specified pointers is `NULL`.
ippStsSizeErr	Indicates an error condition if roiSize has a field with zero or negative value.
ippStsStepErr	Indicates an error condition if imageStep is less than pRoiSize.width*<pixelSize>.
ippStsNotEvenStepErr	Indicates an error condition if steps for floating-point images are not divisible by 4, or steps for 16-bit integer images are not divisible by 2.
ippStsOutOfRangeErr	Indicates an error condition if the seed point is out of ROI.

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 flood filling of connected area
// using Intel(R) Integrated Primitives (Intel(R) IPP) functions:
//     ippiFloodFillGetSize
//     ippiFloodFill_4Con_32s_C1IR
//     ippiFloodFill_8Con_32s_C1IR


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

#define WIDTH   8  /* source image width */
#define HEIGHT  8  /* source image height */

static Ipp32s pImage[WIDTH*HEIGHT] = /* Pointer to ROI of initial image */
{
    0, 10, 90,  0, 0, 0, 0, 0,
    0, 10, 10, 90, 0, 0, 0, 0,
    0, 10,  0, 10, 0, 0, 0, 0,
    0, 10, 10, 90, 0, 0, 0, 0,
    0,  0, 10,  0, 0, 10, 10, 10,
    0, 10,  0,  0, 0, 10, 0, 10,
    0,  0,  0, 10, 0, 10, 10, 10,
    0,  0,  0,  0, 10, 0, 0, 0
};

/* 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;
    int imageStep = WIDTH*sizeof(Ipp32s); /* Steps, in bytes, through the source images */
    IppiSize roiSize = { WIDTH, HEIGHT }; /* Size of source ROI in pixels */
    IppiConnectedComp pRegion = {0};      /* Pointer to repainted region properties structure */
    IppiPoint seedPoint1 = {1,0},seedPoint2 = {5,4}; /* Coordinates of the seed point inside image ROI */
    int Point1NewValue = 1, Point2NewValue = 2; /* Value to fill with for one-channel data */
    Ipp8u* pBuffer = NULL;                /* Pointer to the work buffer */
    int bufferSize = 0;

    /* Calculate size of temporary buffer for flood filling operation */
    check_sts( status = ippiFloodFillGetSize(roiSize, &bufferSize) )

    pBuffer = ippsMalloc_8u(bufferSize);

    /* Perform flood filling of 4-connected area */
    check_sts( status = ippiFloodFill_4Con_32s_C1IR(pImage, imageStep, roiSize, seedPoint1, Point1NewValue, &pRegion, pBuffer) )

    /* Perform flood filling of 8-connected area */
    check_sts( status = ippiFloodFill_8Con_32s_C1IR(pImage, imageStep, roiSize, seedPoint2, Point2NewValue, &pRegion, pBuffer) )

EXIT_MAIN
    ippsFree(pBuffer);
    printf("Exit status %d (%s)\n", (int)status, ippGetStatusString(status));
    return (int)status;
}

Parent topic: Flood Fill Functions

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Intel® Integrated Performance Primitives Developer Guide and Reference

FloodFill

Syntax

Include Files

Domain Dependencies

Parameters

Description

Return Values

Example