*param.USER_INFO = AllocateMemory(SizeOf(USER_INFO))ĬvSetMouseCallback(*window_name, *param)įont.CvFont : #CV_FONT_HERSHEY_SIMPLEX, 0.5, 0.5, #Null, 1, #CV_AA)įrameWidth = cvGetCaptureProperty(*capture, #CV_CAP_PROP_FRAME_WIDTH)įrameHeight = cvGetCaptureProperty(*capture, #CV_CAP_PROP_FRAME_HEIGHT) SetWindowLongPtr_(hWnd, #GWL_STYLE, wStyle & ~(#WS_MAXIMIZEBOX | #WS_MINIMIZEBOX | #WS_SIZEBOX)) WStyle = GetWindowLongPtr_(hWnd, #GWL_STYLE) SendMessage_(hWnd, #WM_SETICON, 0, opencv) Opencv = LoadImage_(GetModuleHandle_(0), opencv.ico", #IMAGE_ICON, 35, 32, #LR_LOADFROMFILE) LpPrevWndFunc = SetWindowLongPtr_(window_handle, #GWL_WNDPROC, CreatePopupImageMenu(0, #PB_Menu_ModernLook)
*window_name = cvGetWindowName(window_handle) Window_handle = cvGetWindowHandle(#CV_WINDOW_NAME)
*capture.CvCapture = cvCreateCameraCapture(#CV_CAP_ANY)ĬvNamedWindow(#CV_WINDOW_NAME, #CV_WINDOW_AUTOSIZE) ProcedureC CvMouseCallback(event, x.l, y.l, flags, *param.USER_INFO) ProcedureReturn CallWindowProc_(lpPrevWndFunc, hWnd, Msg, wParam, lParam) ProcedureC WindowCallback(hWnd, Msg, wParam, lParam) #ALL_POINTS = #IMAGE_SIZE * #PATTERN_SIZE #PATTERN_SIZE = #CORNER_ROW * #CORNER_COL "Press S key to save the pair of raw and corrected images" + Chr(10) + Chr(10) + #CV_DESCRIPTION = "Calibrating of the webcam with 10 x 7 chessboard pattern then shows corrected image." + Chr(10) + Chr(10) + #CV_WINDOW_NAME = "PureBasic Interface to OpenCV" This code make 3 frames from WebCam, but why on different memory adresses? Protected *imgbuf = EncodeImage(0, #PB_ImagePlugin_JPEG) Protected *mat.CvMat = cvEncodeImage(".jpg", *image, CatchImage(0, *mat\ptr, *mat\cols) Params\paramId = #CV_IMWRITE_JPEG_QUALITY cvSaveImage("D:\img.jpg", *image, params.SAVE_INFO *capture.CvCapture = cvCreateCameraCapture(0) cvSetCaptureProperty(*capture.CvCapture, #CV_CAP_PROP_FRAME_HEIGHT, 240) cvSetCaptureProperty(*capture.CvCapture, #CV_CAP_PROP_FRAME_WIDTH, 320) NB*: The Steganography examples require that the hidden binary data is saved in a lossless image format: defaulted to PNG (Portable Network Graphics).Ĭode: Select all IncludeFile "includes/cv_functions.pbi" PIP in the 1st example shows the embedded image, but is not included in the saved image if needed the imbedded image will be resized to fit the main image: Width x Height x 3 (channels) x 8 (LSB)
use the context menu to change the hidden image or save the completed image the first example starts with a defaulted embedded image cv_steganography_image_2.pb: extracts the hidden image cv_steganography_image_1.pb: conceals an image within a larger image Unlike the example cv_steganography_text.pb which requires a comparison image to decode the hidden message, the following examples use the LSB (Least Significant Bit) method. cv_steganography_image_1.pb, cv_steganography_image_2.pb cv_steganography.pb to cv_steganography_text.pb fix the problem mentioned in the previous post Thank you for reviewing the previous example and pointing out the potential problem.
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