コード例 #1
0
        private void ChangeThePalette()
        {
            if (_viewer.Image.BitsPerPixel == 1)
            {
                return;
            }
            try
            {
                int low = (int)(_windowLevelCenter - _windowLevelWidth / 2.0);
                int high = (int)(_windowLevelCenter + _windowLevelWidth / 2.0);
                int minValue, maxVale;

                _currentPalette = new RasterColor[_LUTSize];

                MinMaxValuesCommand cmd = new MinMaxValuesCommand();
                cmd.Run(_viewer.Image);
                minValue = cmd.MinimumValue;
                maxVale  = cmd.MaximumValue;

                RasterPalette.WindowLevelFillLookupTable(
                    _currentPalette,
                    new RasterColor(0, 0, 0),
                    new RasterColor(255, 255, 255),
                    low,
                    high,
                    _viewer.Image.LowBit,
                    _highBit,
                    minValue,
                    maxVale,
                    0,
                    _flags);

                if (_viewer.Image.BitsPerPixel == 8)
                {
                    _viewer.Image.SetPalette(_currentPalette, 0, _currentPalette.Length);
                }
                else
                {
                    _viewer.Image.WindowLevel(
                        _viewer.Image.LowBit,
                        _highBit,
                        _currentPalette,
                        RasterWindowLevelMode.PaintAndProcessing);
                }
            }
            catch (Exception /*ex*/)
            {
            }
        }
コード例 #2
0
ファイル: ProcessingActions.cs プロジェクト: sakpung/webstudy
        public static void WindowLevel(RasterImage image, params string[] parameters)
        {
            if (parameters.Length >= 3)
            {
                int  width, center;
                bool inverted;

                if (!int.TryParse(parameters[0], out width))
                {
                    return;
                }

                if (!int.TryParse(parameters[1], out center))
                {
                    return;
                }

                if (!bool.TryParse(parameters[2], out inverted))
                {
                    return;
                }

                int nLowBit  = image.LowBit;
                int nHighBit = image.HighBit;
                if (nHighBit == -1)
                {
                    nHighBit = image.BitsPerPixel - 1;
                }

                int uLUTLen = 1 << (nHighBit - image.LowBit + 1);

                int nFrom = center - (width >> 1);
                int nTo   = center + ((width + 1) >> 1);

                int nFullMinValue;
                int nFullMaxValue;

                int nLookupTableLength = 0;
                if (image.GetLookupTable() != null)
                {
                    nLookupTableLength = image.GetLookupTable().Length;
                }

                if (image.BitsPerPixel == 8)
                {
                    nFullMinValue = 0;
                    nFullMaxValue = 255;
                }
                else
                {
                    if (nLookupTableLength == 0)
                    {
                        nFullMinValue = !image.Signed ? 0 : -(0xffff + 1) / 2;
                        nFullMaxValue = !image.Signed ? 0xffff - 1 : (0xffff + 1) / 2 - 1;
                    }
                    else
                    {
                        nFullMinValue = !image.Signed ? 0 : -(nLookupTableLength + 1) / 2;
                        nFullMaxValue = !image.Signed ? nLookupTableLength - 1 : (nLookupTableLength + 1) / 2 - 1;
                    }
                }


                RasterColor[] lookUpTable = new RasterColor[uLUTLen];

                RasterPaletteWindowLevelFlags flags = ((image.Signed) ? RasterPaletteWindowLevelFlags.Signed : RasterPaletteWindowLevelFlags.None) | RasterPaletteWindowLevelFlags.Outside | RasterPaletteWindowLevelFlags.Linear | RasterPaletteWindowLevelFlags.DicomStyle;


                RasterColor startColor = new RasterColor(0, 0, 0);
                RasterColor endColor   = new RasterColor(255, 255, 255);
                RasterPalette.WindowLevelFillLookupTable(lookUpTable, (!inverted) ? startColor : endColor, (!inverted) ? endColor : startColor, nFrom, nTo, nLowBit, nHighBit, nFullMinValue, nFullMaxValue, 1, flags);

                if (image.BitsPerPixel == 8)
                {
                    image.SetPalette(lookUpTable, 0, 256);
                }
                else
                {
                    image.WindowLevel(nLowBit, nHighBit, lookUpTable, RasterWindowLevelMode.PaintAndProcessing);
                }
            }
        }