User Tools

Site Tools


quickstart:mycnc-quick-start:cnc-vision-setup

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision
Previous revision
Next revisionBoth sides next revision
quickstart:mycnc-quick-start:cnc-vision-setup [2019/06/24 13:52] ivanquickstart:mycnc-quick-start:cnc-vision-setup [2019/07/02 12:41] ivan
Line 5: Line 5:
 In order to set up the camera to work properly, you must go into the **CNC Settings > Camera**. The screen presented to you will be the one shown below: In order to set up the camera to work properly, you must go into the **CNC Settings > Camera**. The screen presented to you will be the one shown below:
  
-{{:quickstart:mycnc-quick-start:cnc-vision-012.jpg}}+{{:quickstart:mycnc-quick-start:camera-july2-001.png}}
  
 **Camera Interface** allows to choose between a camera connected through a USB cord or through LAN. If the camera is connected through LAN, the **Initialization line** must list the correct IP address of the camera, while the USB channel is used if the camera is connected through a USB cord. **Camera Interface** allows to choose between a camera connected through a USB cord or through LAN. If the camera is connected through LAN, the **Initialization line** must list the correct IP address of the camera, while the USB channel is used if the camera is connected through a USB cord.
  
-**Region of interest** (in pixels) signifies the area in which the camera is actively looking for markers, and should usually be set up to be equal or slightly smaller than the actual resolution of the camera. As the camera used in this example has a resolution of 1920 x 1080, the region of interest has been selected to be 1900 x 1000 to fit within the camera limitationsWhen switching to the Camera tab, it can be seen that the region of interest is visually highlighted in yellow, as shown in the image below:+**IP Camera Initialization line** lists the camera IP for the connection to be established
  
-{{:quickstart:mycnc-quick-start:cnc-vision-upd-002-camera-screen.jpg}} +**Pattern size** can be set experimentally to be slightly larger than the marker itself, in order to account for the visual transition between the marker and its surroundings. In the case of the particular marker used in this scenario, its size has been set to 160 pixels. NOTE: The camera focus must be properly adjusted in order for the camera to recognize markers. 
- +
-**Marker size** can be set experimentally to be slightly larger than the marker itself, in order to account for the visual transition between the marker and its surroundings. In the case of the particular marker used in this scenario, its size has been set to 160 pixels. NOTE: The camera focus must be properly adjusted in order for the camera to recognize markers. +
  
 {{:quickstart:mycnc-quick-start:cnc-vision-003-marker-size.jpg}} {{:quickstart:mycnc-quick-start:cnc-vision-003-marker-size.jpg}}
  
-**Pixel to length coefficient** is used to convert the pixels travelled into the actual physical distance moved, in mm. You are able to calibrate this for both the x- and the y-axesIn order to set up the correct coefficient for your camera, please consult the full set of instructions below.+**Region of interest** (in pixels) signifies the area in which the camera is actively looking for markers, and should usually be set to be equal or slightly smaller than the actual resolution of the cameraIt is set automatically in the newer software versions during the calibration process
  
-**Tool number** is usually assigned to be 99, however other tool numbers can be used if necessary.+**Pixel to length coefficient** is used to convert the pixels travelled into the actual physical distance moved, in mm. You are able to calibrate this for both the x- and the y-axes. In order to set up the correct coefficient for your camera, use the Calibrate button in the Camera tab, or consult the full set of manual set up instructions below. 
 + 
 +**Camera Shift** describes the distance the machine will move by if it does not locate a marker after it has been instructed to look for one. This can happen when the marker is not fully within the region of interest, and then the camera will keep on moving around until it either finds the marker or reaches the end of this specified Camera Shift. It is set automatically in the newer software versions during the calibration process.  
 + 
 +**Tool number** is usually assigned to be 10, however other tool numbers can be used if necessary.
  
 **Camera offset** values are used to specify the distance from the camera to the working tool in the xy-plane.  **Camera offset** values are used to specify the distance from the camera to the working tool in the xy-plane. 
  
-**Camera length** value is used to specify the distance from the camera to the working tool tip in the z-axis. +**Camera tool length** value is used to specify the distance from the camera to the working tool tip in the z-axis. 
  
 **Ignore decoder errors** flag is set to OFF by default. **Ignore decoder errors** flag is set to OFF by default.
  
-**Camera Shift** describes the distance the machine will move by if it does not locate a marker after it has been instructed to look for one. This can happen when the marker is not fully within the region of interest, and then the camera will keep on moving around until it either finds the marker or reaches the end of this specified Camera Shift.  +**Shift Speed** describes the speed with which the machine is moving during its camera shift phase while trying to find the marker. NOTE: Deprecated on the newer versions of myCNC software
- +
-**Shift Speed** describes the speed with which the machine is moving during its camera shift phase while trying to find the marker. +
  
 **Pattern Match Level** describes the level of parity with the original reference marker that each new marker must have for the system to recognize it. Higher numbers mean less parity (more differences between the markers), so as to avoid false positives it is advised to keep the numbers on the lower end of the scale. The graph below the Pattern Match Level indicates the parity levels during the machine search for markers, with the low points of the graph being indicative of the places where marker parity is highest (differences between new marker and reference are lowest).  **Pattern Match Level** describes the level of parity with the original reference marker that each new marker must have for the system to recognize it. Higher numbers mean less parity (more differences between the markers), so as to avoid false positives it is advised to keep the numbers on the lower end of the scale. The graph below the Pattern Match Level indicates the parity levels during the machine search for markers, with the low points of the graph being indicative of the places where marker parity is highest (differences between new marker and reference are lowest). 
Line 35: Line 35:
 **Image sensor correction** corrects for sensors with different aspect ratios. Use this if the marker image appears distorted or stretched when viewed through the Camera tab in myCNC software.  **Image sensor correction** corrects for sensors with different aspect ratios. Use this if the marker image appears distorted or stretched when viewed through the Camera tab in myCNC software. 
  
-====Setting up the pixel to length coefficients====+====Running the calibration==== 
 +  *Go to the Camera tab of myCNC software by opening the Settings panel from the main screen 
 +  *Select an appropriate marker (pattern) size and click the Record button 
 + 
 +{{:quickstart:mycnc-quick-start:camera-july2-003-record.png}} 
 + 
 +  *Click Calibrate. The software will automatically move a set distance in both the x- and the y-axes to determine the pixel to length coefficients.  
 + 
 +{{:quickstart:mycnc-quick-start:camera-july2-004-calibrate.png}} 
 + 
 +The calibration process should be complete after the camera has moved in both the positive and the negative directions in both axes, and the results should be registered in Settings > Config > Camera: 
 + 
 +{{:quickstart:mycnc-quick-start:camera-july2-006.png}} 
 + 
 +====Setting up the pixel to length coefficients (older software versions)====
  
-The pixel to length coefficient is necessary for the camera to know how many millimeters it had moved after having traversed a certain number of pixel to the left/right/top/bottom of its original position. This procedure is done by finding the ratio of millimeters moved to pixels travelled. +The pixel to length coefficient is necessary for the camera to know how many millimeters it had moved after having traversed a certain number of pixel to the left/right/top/bottom of its original position. This procedure is done by finding the ratio of millimeters moved to pixels travelled. While it is automated in the newer versions of myCNC software, it can also be done manually in the older software versions
  
 In order to do so: In order to do so:
quickstart/mycnc-quick-start/cnc-vision-setup.txt · Last modified: 2024/02/26 14:50 by ivan

Donate Powered by PHP Valid HTML5 Valid CSS Driven by DokuWiki