ソーベルフィルタを利用したエッジ検出
Namespace: fvalgcliAssembly: fvalgcli (in fvalgcli.dll) Version: 3.1.0.0 (3.1.0.11)
Syntax
C# |
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public static int fnFIE_edge_sobel( FHANDLE hsrc, FHANDLE hmag, ref F_EDGE_SOBEL_PARAMS param, f_edge_feature_mode feat_mode, f_border_mode border_mode, PNT_T offset, ref F_EDGE_PTR edges, ref int edge_num ) |
Visual Basic |
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Public Shared Function fnFIE_edge_sobel ( hsrc As FHANDLE, hmag As FHANDLE, ByRef param As F_EDGE_SOBEL_PARAMS, feat_mode As f_edge_feature_mode, border_mode As f_border_mode, offset As PNT_T, ByRef edges As F_EDGE_PTR, ByRef edge_num As Integer ) As Integer |
Parameters
- hsrc
- Type: fvalgcli..::..FHANDLE
入力画像(type:uc8 / ch:1)
- hmag
- Type: fvalgcli..::..FHANDLE
エッジ強度画像(type:us16 / ch:1)
- param
- Type: fvalgcli..::..F_EDGE_SOBEL_PARAMS%
エッジ検出のための各種パラメータ
- feat_mode
- Type: fvalgcli..::..f_edge_feature_mode
勾配方向、強度付きエッジ点構造体に保持するデータを指定するモード
- border_mode
- Type: fvalgcli..::..f_border_mode
ボーダーモード- F_BORDER_NONE ボーダー処理無し
- F_BORDER_CONTINUOUS 端延長モード
- offset
- Type: fvalgcli..::..PNT_T
オフセット量
- edges
- Type: fvalgcli..::..F_EDGE_PTR%
取得したエッジ。( IntPtr.Zero で初期化してください。)
- edge_num
- Type: System..::..Int32%
取得したエッジ数
Return Value
Type: Int32以下のエラーコードを返します。
エラーコード:
f_err | 内容 |
---|---|
F_ERR_NONE | 正常終了 |
F_ERR_INVALID_IMAGE | 不正な画像オブジェクトが渡された |
F_ERR_INVALID_PARAM | 不正なパラメータが渡された |
F_ERR_NOMEMORY | メモリ不足エラー |
F_ERR_NO_LICENCE | ライセンスエラー、または未初期化エラー |
Examples
C# | Copy |
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// $Revision: 1.1 $ using System; using System.Collections.Generic; using System.Text; using System.Runtime.InteropServices; using fvalgcli; namespace TC { public partial class FIE { [FvPluginExecute] public void fnFIE_edge_sobel() { string filepath = TestImageDir + "/testdata/image_file_8bpp.bmp"; int status = (int)f_err.F_ERR_NONE; FHANDLE hImageSrc = FHANDLE.Zero; FHANDLE hImageDst = FHANDLE.Zero; F_EDGE_PTR edges = new F_EDGE_PTR(); try { int edge_num = 0; PNT_T offset; offset.x = 0; offset.y = 0; f_border_mode border_mode = f_border_mode.F_BORDER_NONE; f_edge_feature_mode feat_mode = f_edge_feature_mode.F_EDGE_FEAT_DIRECT | f_edge_feature_mode.F_EDGE_FEAT_MAG_SQRT; F_EDGE_SOBEL_PARAMS param; param.mag_threshold = 120; param.nms_length = 1; api.fnFIE_load_bmp(filepath, ref hImageSrc, f_color_img_type.F_COLOR_IMG_TYPE_UC8); hImageDst = api.fnFIE_img_root_alloc((int)f_imgtype.F_IMG_US16, api.fnFIE_img_get_channels(hImageSrc), api.fnFIE_img_get_width(hImageSrc), api.fnFIE_img_get_height(hImageSrc)); // エッジ検出実行. status = api.fnFIE_edge_sobel(hImageSrc, hImageDst, ref param, feat_mode, border_mode, offset, ref edges, ref edge_num); Assert.IsTrue(status == (int)f_err.F_ERR_NONE, "fnFIE_edge_sobel: エラーが発生しました。({0})", (f_err)status); Console.WriteLine("fnFIE_edge_sobel"); for (int i = 0; i < edge_num; i++) Console.WriteLine("edge[{0}]=({1}, {2}, {3}, {4})", i, edges[i].x, edges[i].y, edges[i].q, edges[i].mag); } finally { hImageSrc.Dispose(); hImageDst.Dispose(); edges.Dispose(); } } } } |
Visual Basic | Copy |
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' $Revision: 1.1 $ Imports System.Collections.Generic Imports System.Text Imports System.Runtime.InteropServices Imports fvalgcli Public Partial Class FIE <FvPluginExecute> _ Public Sub fnFIE_edge_sobel() Dim filepath As String = TestImageDir & "/testdata/image_file_8bpp.bmp" Dim status As Integer = CInt(f_err.F_ERR_NONE) Dim hImageSrc As FHANDLE = FHANDLE.Zero Dim hImageDst As FHANDLE = FHANDLE.Zero Dim edges As New F_EDGE_PTR() Try Dim edge_num As Integer = 0 Dim offset As PNT_T offset.x = 0 offset.y = 0 Dim border_mode As f_border_mode = f_border_mode.F_BORDER_NONE Dim feat_mode As f_edge_feature_mode = f_edge_feature_mode.F_EDGE_FEAT_DIRECT Or f_edge_feature_mode.F_EDGE_FEAT_MAG_SQRT Dim param As F_EDGE_SOBEL_PARAMS param.mag_threshold = 120 param.nms_length = 1 api.fnFIE_load_bmp(filepath, hImageSrc, f_color_img_type.F_COLOR_IMG_TYPE_UC8) hImageDst = api.fnFIE_img_root_alloc(CInt(f_imgtype.F_IMG_US16), api.fnFIE_img_get_channels(hImageSrc), api.fnFIE_img_get_width(hImageSrc), api.fnFIE_img_get_height(hImageSrc)) ' エッジ検出実行. status = api.fnFIE_edge_sobel(hImageSrc, hImageDst, param, feat_mode, border_mode, offset, _ edges, edge_num) Assert.IsTrue(status = CInt(f_err.F_ERR_NONE), "fnFIE_edge_sobel: エラーが発生しました。({0})", CType(status, f_err)) Console.WriteLine("fnFIE_edge_sobel") For i As Integer = 0 To edge_num - 1 Console.WriteLine("edge[{0}]=({1}, {2}, {3}, {4})", i, edges(i).x, edges(i).y, edges(i).q, edges(i).mag) Next Finally hImageSrc.Dispose() hImageDst.Dispose() edges.Dispose() End Try End Sub End Class |