图像采集的主要区域 - 概述

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图像采集的主要区域 - 概述

图像上方

在图像采集视图中,图像上方有一个按钮,可将采集的图像临时切换为线性传感器中摄像机配置的正常图像。有关更多信息,请参阅线路传感器。

图像

摄像机图像以 5:4 的宽高比显示,与标准全画幅采集图像的宽高比一致。如果图像采集配置了其他宽高比或使用了线性传感器,则摄像机图像将以柱盒或信箱(黑边)格式显示,不会失真。

信息:

获取的图像在 mapp Vision HMI 应用程序中显示为 JPEG 图像。

由于对图像进行了压缩,特别是在曝光过度/曝光不足的图像区域,人机界面图像中各个像素的灰度值可能会与未压缩图像中的灰度值略有偏差。人机界面应用程序中显示的这些灰度值偏差不会影响图像处理和视觉功能配置,因为这些都是根据未压缩图像在摄像机上执行的。

移液器输出位于图像底部边缘。此工具可用于确定灰度值和图像像素的位置,就像在未压缩图像采集中一样。

图像下方的按钮

下表介绍了 "图像采集 "视图中各个按钮的功能。

按钮图标

功能描述

button_take_image

获取图像

button_fit_to_size

根据显示区域的大小调整图像

button_zoom_in

放大

button_zoom_out

缩小

button_repetitivemode

启用或禁用自动循环图像采集模式(切换按钮),另请参阅重复模式

图像采集参数和过程变量(右侧)

选项卡 "图像和光线 "包含图像采集的参数和过程变量。例如,可以在此修改曝光时间和焦距,或者输入自动搜索焦距和曝光时间的位置。之前在 AS 中进行的设置也可以使用,但无法编辑。

有关各个变量的详细信息,请参阅摄像机寄存器概览

线形传感器的功能在线形传感器中描述。

图形概览

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本节主题:

线形传感器

外部光线

搜索焦距和曝光时间

重复模式


Above the image

In the image acquisition view, there is a button above the image that temporarily switches the acquired image to the configured normal image for a camera in the line sensor. For additional information, see Line sensor.

Image

The camera image is displayed in an aspect ratio of 5:4, which corresponds to the aspect ratio of a standard full frame acquired image. If the image acquisition was configured with another aspect ratio or the line sensor is used, the camera image is displayed undistorted in pillarbox or letterbox (black border) format.

Information:

Acquired imaged are displayed in the mapp Vision HMI application as a JPEG image.

Because of this image compression, it can happen especially with overexposed/underexposed image areas, that the grayscale values of individual pixels in the HMI image deviate slightly from those in the uncompressed image acquisition. These grayscale value deviations displayed in the HMI application have no influence on image processing and configuration of vision functions since these are always performed on the camera based on the uncompressed image.

Pipette output is at the bottom edge of the image. This tool can be used to determine the grayscale value and the position of an image pixel as it is in the uncompressed image acquisition.

Buttons below the image

The functions of the individual buttons available in the view "Image acquisition" are described in the table.

Button icon

Function description

button_take_image

Acquires an image

button_fit_to_size

Adapts the image to the size of the display area

button_zoom_in

Zooms in

button_zoom_out

Zooms out

button_repetitivemode

Enables or disables the mode for automatic, cyclic image acquisition (toggle button), see also Repetitive mode.

Image acquisition parameters and process variables (right-hand side)

Tab "Image and light" contains the parameters and process variables for image acquisition. The exposure time and focus can be modified here, for example, or the position for automatically searching for the focus and exposure time can be entered. The settings previously made in Automation Studio are also available, but they cannot be edited.

For additional information about individual variables, see the Overview of registers of the camera.

The functions for the line sensor are described under Line sensor.

Overview graphic

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Topics in this section:

Line sensor

External light

Searching for the focus and exposure time

Repetitive mode