コード例 #1
0
ファイル: Path.cs プロジェクト: tdck/opencvdotnet
        /// <summary>
        /// Calculate the histogram for the region of interest and saves it under
        /// initialHistogram.
        /// </summary>
        private void UpdateHistogram()
        {
            // release the previous histogram if any.
            if (initialHistogram != null)
            {
                initialHistogram.Release();
            }

            // if there's no image, just return.
            if (image == null)
            {
                return;
            }

            // we use symmetric bins and entire range.
            int[]    bpBins   = { NumberOfBins, NumberOfBins, NumberOfBins };
            CVPair[] bpRanges = { new CVPair(0, 255), new CVPair(0, 255), new CVPair(0, 255) };

            // calculate histogram for region of interest and display it in panel.
            image.RegionOfInterest = originalImage.SelectionRect;
            this.initialHistogram  = image.CalcHistogram(bpBins, bpRanges);
            initHisto.ShowHistogram(image);
            image.ResetROI();

            ResetSegmentation();

            RefreshImages();
        }
コード例 #2
0
ファイル: ColorHistogram.cs プロジェクト: tdck/opencvdotnet
        public void ShowHistogram(CVImage image, CVImage mask)
        {
            if (image == null)
            {
                return;
            }

            // split image into channels (b,g,r)
            CVImage[] planes = image.Split();

            // we will create a 1D histogram for every channel. each histogram will have
            // 'numberOfBins' bins for its single dimension (ranged from 0 to 255).
            int[]    bins   = { BinsPerChannel };
            CVPair[] ranges = { new CVPair(0, 255) };

            // calculate histogram for red, green and blue channels (seperately).
            CVHistogram histoRed   = planes[0].CalcHistogram(bins, ranges, mask);
            CVHistogram histoBlue  = planes[1].CalcHistogram(bins, ranges, mask);
            CVHistogram histoGreen = planes[2].CalcHistogram(bins, ranges, mask);

            // dispose of plane images.
            foreach (CVImage img in planes)
            {
                img.Release();
            }

            // draw the three histograms.
            DrawHistogram(bluePanel, histoBlue, 1);
            DrawHistogram(greenPanel, histoGreen, 2);
            DrawHistogram(redPanel, histoRed, 0);

            histoBlue.Release();
            histoGreen.Release();
            histoRed.Release();
        }