topic Re: Ipp FloodFill return strange region (IppiConnectedComp) in Intel® Integrated Performance Primitives

Ipp FloodFill return strange region (IppiConnectedComp)

Kittipong_Lim — Thu, 04 Jun 2009 09:36:38 GMT

Hello
I'm using IPP 6.0.2 with Delphi 2007 and found that IPP floddfill sometimes return strang region (IppiConnectedComp) such as when using ippiFloodFill_Range4Con_8u_C1IR with the image 1000x1000 pixel. Ipp return region as (2010230698, (0, 0, 0), (0, 0, 1000, 1000)) which mean region area = 2,010,230,698 while image size only 1000x1000 (1 channel, 1 byte per pixel)

and sometimes it takes more than 1-5 minutes for flood fill image size (1000x1000) in CPU E2200. When it take long time than usual, it may return region area in minus (such as -1,853,045,006) or in bigger size than real image area, and filled area may be wrong. This often occur when use Min/MaxDelta with high value such as 100 or higher.

How can i fix this? Thanks in advance.

//This is my code. Test image is different color gradient image with 1000x1000 pixel in byte, 3 channel.

roiSize.width := width;
roiSize.height := height;
MinDelta := ifthen(round(fuzzyness*1.28)<=128,round(fuzzyness*1.28),128);
MaxDelta := ifthen(round(fuzzyness*1.28)<=128,round(fuzzyness*1.28),128);
newVal := 0;
seed.x := origx;
seed.y := origy;
ippiFloodFillGetSize(roiSize,@BuffSize);
getmem(pBuffer,BuffSize);
pImageP3[0] := pipp8u(self.red.realPixel);
pImageP3[1] := pipp8u(self.gre.realPixel);
pImageP3[2] := pipp8u(self.blu.realPixel);
ippiFloodFill_Range4Con_8u_C1IR(pImageP3[0],width,roiSize,seed,newVal,minDelta,maxDelta,@Region,pBuffer);
ippiFloodFill_Range4Con_8u_C1IR(pImageP3[1],width,roiSize,seed,newVal,minDelta,maxDelta,@Region,pBuffer);
ippiFloodFill_Range4Con_8u_C1IR(pImageP3[2],width,roiSize,seed,newVal,minDelta,maxDelta,@Region,pBuffer);

//IppiConnectedComp declare as below
IppiConnectedComp = record
area: double;
value: array[0..2] of double;
rect: IppiRect;
end;

Re: Ipp FloodFill return strange region (IppiConnectedComp)

Vladimir_Dudnik — Mon, 08 Jun 2009 15:38:54 GMT

Thanks for reporting about this. Could you please also attach your source image (to help us to reproduce the issue)?

Regards,
Vladimir

Re: Ipp FloodFill return strange region (IppiConnectedComp)

Kittipong_Lim — Tue, 09 Jun 2009 07:37:03 GMT

Quoting - Vladimir Dudnik (Intel)

Thanks for reporting about this. Could you please also attach your source image (to help us to reproduce the issue)?

Regards,
Vladimir

here is my test file.

http://www.digitalmaster.co.th/images/1000x1000.jpg

Re: Ipp FloodFill return strange region (IppiConnectedComp)

Igor_B_Intel1 — Wed, 10 Jun 2009 12:40:36 GMT

Quoting - Kittipong Lim

here is my test file.

http://www.digitalmaster.co.th/images/1000x1000.jpg

Hello,
Could you please provide exact values of seed and Min/MaxDelta parameters which lead to your problem?

By the way there is ippiFloodFill_Range4Con_8u_C3IR function for colored input image.

Igor.

Re: Ipp FloodFill return strange region (IppiConnectedComp)

Kittipong_Lim — Thu, 11 Jun 2009 07:29:53 GMT

Quoting - Igor Belyakov (Intel)

Hello Igor

I try

seed = (483, 463) //(at this seed RGB = (124,100,100)
newval = 0
minDelta = (100,100,100)
maxDelta = (100,100,100)
roiSize = (1000,1000)

then at the
- red channel. it return region = (197095, (0, 0, 0), (166, 288, 627, 316)). this seem work as it should be.
- green channel, it took CPU time for 3 minutes and return region = (-985044354, (0, 0, 0), (0, 288, 1000, 316))
- blue channel, it took CPU time for 3 minutes and return region = (-985044354, (0, 0, 0), (0, 288, 1000, 316))

Since my app already design to keep the image in planar. So i often use 1c instead of 3c.

Re: Ipp FloodFill return strange region (IppiConnectedComp)

Igor_B_Intel1 — Thu, 11 Jun 2009 12:00:03 GMT

Quoting - Kittipong Lim

Hello,

In this case for green and blue chanels newval value is inside pixel's value range [0,200] ([100-minDelta,100+maxDelta]) to be filled. In such cases try to slightly correct min/MaxDelta get newVal out of pixel's value range to be filled.

Igor

Re: Ipp FloodFill return strange region (IppiConnectedComp)

Kittipong_Lim — Fri, 12 Jun 2009 08:43:18 GMT

Quoting - Igor Belyakov (Intel)

Hello,
In this case for green and blue chanels newval value is inside pixel's value range [0,200] ([100-minDelta,100+maxDelta]) to be filled. In such cases try to slightly correct min/MaxDelta get newVal out of pixel's value range to be filled.

Igor

Did you mean that if i use minDelta = 128, maxDelta = 128 and seed value = 128 (this should fill every pixel) / or if i use minDelta,maxDelta = 255 .. this function will always return strange region like this since i cant find any newVal out of pixel's value range?