overpaint_grayoverpaint_grayOverpaintGrayOverpaintGrayoverpaint_gray (算子名称)

名称

overpaint_grayoverpaint_grayOverpaintGrayOverpaintGrayoverpaint_gray — Overpaint the gray values of an image.

参数签名

overpaint_gray(ImageDestination, ImageSource : : : )

描述

overpaint_grayoverpaint_grayOverpaintGrayOverpaintGrayOverpaintGrayoverpaint_gray copies the gray values of the image given in ImageSourceImageSourceImageSourceImageSourceimageSourceimage_source into the image in ImageDestinationImageDestinationImageDestinationImageDestinationimageDestinationimage_destination. Only the gray values of the domain of ImageSourceImageSourceImageSourceImageSourceimageSourceimage_source are copied (see reduce_domainreduce_domainReduceDomainReduceDomainReduceDomainreduce_domain).

If you do not want to modify ImageDestinationImageDestinationImageDestinationImageDestinationimageDestinationimage_destination itself, you can use 该算子 paint_graypaint_grayPaintGrayPaintGrayPaintGraypaint_gray, which returns the result in a newly created image.

注意

overpaint_grayoverpaint_grayOverpaintGrayOverpaintGrayOverpaintGrayoverpaint_gray modifies the content of an already existing image (ImageDestinationImageDestinationImageDestinationImageDestinationimageDestinationimage_destination). Besides, even other image objects may be affected: For example, if you created ImageDestinationImageDestinationImageDestinationImageDestinationimageDestinationimage_destination via copy_objcopy_objCopyObjCopyObjCopyObjcopy_obj from another image object (or vice versa), overpaint_grayoverpaint_grayOverpaintGrayOverpaintGrayOverpaintGrayoverpaint_gray will also modify the image matrix of this other image object. Therefore, overpaint_grayoverpaint_grayOverpaintGrayOverpaintGrayOverpaintGrayoverpaint_gray should only be used to overpaint newly created image objects. Typical operators for this task are, e.g., gen_image_constgen_image_constGenImageConstGenImageConstGenImageConstgen_image_const (creates a new image with a specified size), gen_image_protogen_image_protoGenImageProtoGenImageProtoGenImageProtogen_image_proto (creates an image with the size of a specified prototype image) or copy_imagecopy_imageCopyImageCopyImageCopyImagecopy_image (creates an image as the copy of a specified image).

运行信息

多线程类型:可重入(与非独占操作符并行运行)。
多线程作用域:全局(可以从任何线程调用)。
未经并行化处理。

This operator modifies the state of the following input parameter:

ImageDestinationImageDestinationImageDestinationImageDestinationimageDestinationimage_destination

During execution of this operator, access to the value of this parameter must be synchronized if it is used across multiple threads.

参数表

ImageDestinationImageDestinationImageDestinationImageDestinationimageDestinationimage_destination (input_object, state is modified) (multichannel-)image → object (byte / direction / cyclic / int1 / int2 / uint2 / int4 / real / complex / vector_field)

Input image to be painted over.

ImageSourceImageSourceImageSourceImageSourceimageSourceimage_source (input_object) (multichannel-)image → object (byte / direction / cyclic / int1 / int2 / uint2 / int4 / real / complex / vector_field)

Input image containing the desired gray values.

例程 (HDevelop)

* Copy a circular part of the image 'monkey' into a new image (New1):

read_image(Image,'monkey')
gen_circle(Circle,200,200,150)
reduce_domain(Image,Circle,Mask)
* New image with black (0) background
gen_image_proto(Image,New1,0.0)
* Copy a part of the image 'monkey' into New1
overpaint_gray(New1,Mask)

例程 (C)

/* Copy a circular part of the image 'monkey' into a new image (New1): */

read_image(&Image,"monkey");
gen_circle(&Circle,200.0,200.0,150.0);
reduce_domain(Image,Circle,&Mask);
/* New image with black (0) background */
gen_image_proto(Image,&New1,0.0);
/* Copy a part of the image 'monkey' into New1 */
overpaint_gray(New1,Mask);

例程 (HDevelop)

* Copy a circular part of the image 'monkey' into a new image (New1):

read_image(Image,'monkey')
gen_circle(Circle,200,200,150)
reduce_domain(Image,Circle,Mask)
* New image with black (0) background
gen_image_proto(Image,New1,0.0)
* Copy a part of the image 'monkey' into New1
overpaint_gray(New1,Mask)

例程 (HDevelop)

* Copy a circular part of the image 'monkey' into a new image (New1):

read_image(Image,'monkey')
gen_circle(Circle,200,200,150)
reduce_domain(Image,Circle,Mask)
* New image with black (0) background
gen_image_proto(Image,New1,0.0)
* Copy a part of the image 'monkey' into New1
overpaint_gray(New1,Mask)

例程 (HDevelop)

* Copy a circular part of the image 'monkey' into a new image (New1):

read_image(Image,'monkey')
gen_circle(Circle,200,200,150)
reduce_domain(Image,Circle,Mask)
* New image with black (0) background
gen_image_proto(Image,New1,0.0)
* Copy a part of the image 'monkey' into New1
overpaint_gray(New1,Mask)

结果

overpaint_grayoverpaint_grayOverpaintGrayOverpaintGrayOverpaintGrayoverpaint_gray returns 2 ( H_MSG_TRUE) if all parameters are correct. 如有必要，将引发异常。

可能的前置算子

read_imageread_imageReadImageReadImageReadImageread_image, gen_image_constgen_image_constGenImageConstGenImageConstGenImageConstgen_image_const, gen_image_protogen_image_protoGenImageProtoGenImageProtoGenImageProtogen_image_proto

可替代算子

get_image_pointer1get_image_pointer1GetImagePointer1GetImagePointer1GetImagePointer1get_image_pointer1, paint_graypaint_grayPaintGrayPaintGrayPaintGraypaint_gray, set_grayvalset_grayvalSetGrayvalSetGrayvalSetGrayvalset_grayval, copy_imagecopy_imageCopyImageCopyImageCopyImagecopy_image

参考其它

paint_regionpaint_regionPaintRegionPaintRegionPaintRegionpaint_region, overpaint_regionoverpaint_regionOverpaintRegionOverpaintRegionOverpaintRegionoverpaint_region

模块

Foundation

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