多个图像同步显示解决图像闪烁问题
多个图像显示解决图像闪烁问题* This program performs the calibration of a multi-view stereo* setup consisting of 4 identical cameras.
*
* Set some parameters
dev_update_off ()
dev_get_preferences ('suppress_handled_exceptions_dlg', PreferenceValues)
dev_set_preferences ('suppress_handled_exceptions_dlg', 'true')
ImgPath := '3d_machine_vision/multi_view/'
ImgPrefix := 'multi_view_calib_'
FileName := ImgPath + ImgPrefix + 'cam_0_00'
read_image (Image, FileName)
get_image_size (Image, Width, Height)
Scale := 0.5
*
* Calibration parameters
CaltabDescr := 'caltab_100mm.descr'
* CaltabThickness := 0.0064
NumCameras := 4
NumCalibObjects := 1
NumPoses := 20
CameraType := 'area_scan_polynomial'
StartCamPar :=
*
* Create camera calibration model and set parameters
create_calib_data ('calibration_object', NumCameras, NumCalibObjects, CalibDataID)
* Set used camera type
set_calib_data_cam_param (CalibDataID, 'all', CameraType, StartCamPar)
* Set used calibration object
set_calib_data_calib_object (CalibDataID, 0, CaltabDescr)
*
* Process the calibration images
open_windows_multi_view_setup (Height, Width, Scale, WindowHandles)
NumIgnoredImg := 0
for PoseIndex := 0 to NumPoses - 1 by 1
for CameraIndex := 0 to NumCameras - 1 by 1
FileName := ImgPath + ImgPrefix + 'cam_' + CameraIndex + '_' + PoseIndex $ '02'
read_image (Image, FileName)
*
set_system ('flush_graphic', 'false')
dev_set_window (WindowHandles)
dev_display (Image)
Message := ['Camera ' + CameraIndex,'Pose # ' + PoseIndex]
Color := ['black','black']
* Extract observation data
ShowErrorMsg := false
try
* Find the calibration table, extract the marks and store the
* observation in the calibration data model
find_calib_object (Image, CalibDataID, CameraIndex, 0, PoseIndex, [], [])
* Read the caltab and the marks' contours found for visualization
get_calib_data_observ_contours (Caltab, CalibDataID, 'caltab', CameraIndex, 0, PoseIndex)
get_calib_data_observ_contours (Marks, CalibDataID, 'marks', CameraIndex, 0, PoseIndex)
dev_display (Caltab)
dev_display (Marks)
catch (Exception)
* If the calibration table or marks were not identified,
* process the next image. Some missing data is
* not dramatic since the calibration is robust.
ShowErrorMsg := true
NumIgnoredImg := NumIgnoredImg + 1
Message :=
Color :=
endtry
disp_message (WindowHandles, Message, 'window', 12, 12, Color, 'true')
if (ShowErrorMsg)
* Show error status
enforce_visualization (WindowHandles)
disp_continue_message (WindowHandles, 'black', 'true')
stop ()
endif
endfor
enforce_visualization (WindowHandles)
endforopen_windows_multi_view_setup函数如下：
* This procedure opens four windows in order to display
* the images of a multi-view stereo setup consisting
* of four cameras
*
dev_open_window ((Height * Scale) + 10, (Width * Scale) + 10, Width * Scale, Height * Scale, 'black', WindowHandle3)
dev_set_draw ('margin')
dev_set_line_width (1)
dev_set_color ('green')
set_display_font (WindowHandle3, 14, 'mono', 'true', 'false')
*
dev_open_window ((Height * Scale) + 10, 0, Width * Scale, Height * Scale, 'black', WindowHandle2)
dev_set_draw ('margin')
dev_set_line_width (1)
dev_set_color ('green')
set_display_font (WindowHandle2, 14, 'mono', 'true', 'false')
*
dev_open_window (0, (Width * Scale) + 10, Width * Scale, Height * Scale, 'black', WindowHandle1)
dev_set_draw ('margin')
dev_set_line_width (1)
dev_set_color ('green')
set_display_font (WindowHandle1, 14, 'mono', 'true', 'false')
*
dev_open_window (0, 0, Width * Scale, Height * Scale, 'black', WindowHandle0)
dev_set_draw ('margin')
dev_set_line_width (1)
dev_set_color ('green')
set_display_font (WindowHandle0, 14, 'mono', 'true', 'false')
WindowHandles :=
return ()enforce_visualization函数如下：
* This procedure enforces the visualization in the windows
* specified within WindowHandles
*
set_system ('flush_graphic', 'true')
for Index := 0 to |WindowHandles| - 1 by 1
write_string (WindowHandles, '')
endfor
return ()主要函数：
set_system ('flush_graphic', 'false')
set_system ('flush_graphic', 'true')
PS：Halcon12版本
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