moments_gray_planemoments_gray_planeMomentsGrayPlaneMomentsGrayPlanemoments_gray_plane (算子)

名称

moments_gray_planemoments_gray_planeMomentsGrayPlaneMomentsGrayPlanemoments_gray_plane — 通过平面计算灰度值矩和近似值。

签名

moments_gray_plane(Regions, Image : : : MRow, MCol, Alpha, Beta, Mean)

描述

算子 moments_gray_planemoments_gray_planeMomentsGrayPlaneMomentsGrayPlaneMomentsGrayPlanemoments_gray_plane calculates the gray value moments and the parameters of the approximation of the gray values by a plane. The calculation is carried out according to the following formula: where is the plane, , the center, and , , and the scaled moments of RegionsRegionsRegionsRegionsregionsregions。

The parameters AlphaAlphaAlphaAlphaalphaalpha, BetaBetaBetaBetabetabeta and MeanMeanMeanMeanmeanmean describe a plane above the region: Thus AlphaAlphaAlphaAlphaalphaalpha indicates the gradient in the direction of the line axis (“down”), BetaBetaBetaBetabetabeta the gradient in the direction of the column axis (to the “right”).

注意

Note that the operator moments_gray_planemoments_gray_planeMomentsGrayPlaneMomentsGrayPlaneMomentsGrayPlanemoments_gray_plane only considers the given RegionsRegionsRegionsRegionsregionsregions and ignores any previously set domain of the input image ImageImageImageImageimageimage。

执行信息

多线程类型：可重入（与非独占算子并行运行）。
多线程作用域：全局（可从任何线程调用）。
在元组级别上自动并行化。

参数

RegionsRegionsRegionsRegionsregionsregions (输入对象) region(-array) → object

Regions to be checked.

ImageImageImageImageimageimage (输入对象) singlechannelimage → object (byte / direction / cyclic / uint2 / real)

Corresponding gray values.

MRowMRowMRowMRowMRowmrow (输出控制) real(-array) → (real)

Mixed moments along a line.

MColMColMColMColMColmcol (输出控制) real(-array) → (real)

Mixed moments along a column.

AlphaAlphaAlphaAlphaalphaalpha (输出控制) real(-array) → (real)

Parameter Alpha of the approximating plane.

BetaBetaBetaBetabetabeta (输出控制) real(-array) → (real)

Parameter Beta of the approximating plane.

MeanMeanMeanMeanmeanmean (输出控制) real(-array) → (real)

Mean gray value.

结果

算子 moments_gray_planemoments_gray_planeMomentsGrayPlaneMomentsGrayPlaneMomentsGrayPlanemoments_gray_plane 返回值 2 ( H_MSG_TRUE) if an image with the defined gray values ('byte'"byte""byte""byte""byte""byte") is entered and the parameters are correct.当输入为空（无可用输入图像）时可设置行为通过算子 set_system(::'no_object_result',<Result>:)set_system("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)SetSystem("no_object_result",<Result>)set_system("no_object_result",<Result>), the behavior in case of empty region is set via set_system(::'empty_region_result',<Result>:)set_system("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)SetSystem("empty_region_result",<Result>)set_system("empty_region_result",<Result>)。如有必要，则抛出异常。

可能的前趋

draw_regiondraw_regionDrawRegionDrawRegionDrawRegiondraw_region, gen_circlegen_circleGenCircleGenCircleGenCirclegen_circle, gen_ellipsegen_ellipseGenEllipseGenEllipseGenEllipsegen_ellipse, gen_rectangle1gen_rectangle1GenRectangle1GenRectangle1GenRectangle1gen_rectangle1, gen_rectangle2gen_rectangle2GenRectangle2GenRectangle2GenRectangle2gen_rectangle2, thresholdthresholdThresholdThresholdThresholdthreshold, regiongrowingregiongrowingRegiongrowingRegiongrowingRegiongrowingregiongrowing

另见

intensityintensityIntensityIntensityIntensityintensity, moments_region_2ndmoments_region_2ndMomentsRegion2ndMomentsRegion2ndMomentsRegion2ndmoments_region_2nd

参考文献

R. Haralick, L. Shapiro; “Computer and Robot Vision”; Addison-Wesley, 1992, pp 75-76

模块

基础

算子