get_channel_info — 关于图像对象组成部分的信息。
get_channel_info(Object : : Request, Channel : Information)
算子 get_channel_info gives information about the components
of an image object. The following requests (Request) are
currently possible:
Output of the names of the procedures which initially created the image components (not the object).
Output of the type of image component
(byte, int1, int2, uint2 int4,
real, direction, cyclic, complex,
vector_field).
The component 0 is of type 'region' or 'xld'.
In the tuple Channel the numbers of the components about which
information is required are stated.
After carrying out get_channel_info, Information contains
a tuple of strings (one string per entry in Channel)
with the required information.
For a short description of the iconic objects that are available in HALCON see the introduction of chapter 对象。
Object (输入对象) object → object
Image object to be examined.
Request (输入控制) string → (string)
Required information about object components.
默认值： 'creator'
值列表： 'creator', 'type'
Channel (输入控制) channel(-array) → (integer)
Components to be examined (0 for region/XLD).
默认值： 0
建议值： 0, 1, 2, 3, 4, 5, 6, 7, 8
Information (输出控制) string(-array) → (string)
Requested information.
如果参数正确，算子 get_channel_info 返回值 2 ( H_MSG_TRUE )。否则将抛出异常。
基础