K R A ME R E LE CT R O N IC S L T D .
Contents 1 Introduction 1 2 2.1 Installing the VP-790 Warp Generator Connecting the PC to the VP-790 2 4 3 Overview 5 4 4.1 4.2 4.3 Warp Generator Main User Interface Grid Tools The Evaluator Controls Window 6 6 7 10 5 5.1 5.2 5.3 5.
1 Introduction Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been providing a world of unique, creative, and affordable solutions to the vast range of problems that confront video, audio, presentation, and broadcasting professionals on a daily basis.
2 Installing the VP-790 Warp Generator Download the VP-790 Warp Generator from http://www.kramerelectronics.com. The Control Software requires the following: • Windows™ XP, Vista or Windows™ 7 To install the VP-790 Warp Generator Software: 1. Double click the Setup.exe file. The Welcome window appears: Figure 1: Welcome Window 2. Click Next.
Figure 2: Choose Destination Location Window 3. Click Browse to select the destination folder. 4. When finished, click Next.
5. Click Next. The Installation Progress window appears: Figure 4: Installation Progress Window The Installation Complete window appears: Figure 5: Installation Complete Window 6. Click Close. An icon appears on the desktop and a shortcut appears in the Start Menu Programs folder in the Kramer sub-folder. 2.1 Connecting the PC to the VP-790 See Section 5.4.1 for instructions on how to connect the device to a PC via the Ethernet.
3 Overview The VP-790 Warp Generator is an application that lets you manipulate video stream warps quickly with its simple-to-use editor. Image warping can be useful when projecting onto uneven surfaces and for correcting projector misalignment. It is also useful for the correcting of projected images on concave or convex surfaces or even for intentional image distortion. The VP-790 Warp Generator uses two file types: • Grid Files (.
4 Warp Generator Warp Generator consists of a main user interface which is used for handling the warp files and the grid screen which includes grid design tools. This section defines the main user interface (see Section 4.1) and the grid tools (see Section 4.2). 4.1 Main User Interface Double-click the VP-790 Warp Generator icon. The main window opens.
# Feature Function 7 New Grid Open up the New Grid box and choose various parameters for the grid 8 Edit Grid Open the selected grid file in the Grid Editor 9 Delete Grid Remove the currently selected grid file from the grid files folder 10 Browse Grid Files Open the grid files folder in the Windows Explorer; useful for importing multiple files 11 Generate Grid from Warp Create a grid file from the warp file currently selected 12 Clear All Warps Delete all .
4.2.1 The Grid Designer This section defines the Grid Designer Window.
4.2.1.1 Warp Map Presets 19B The presets area is used to create the general appearance of the warp map. Figure 8: Setting Presets The presets area lets you set an initial warp grid, which is based on the position of the projector relative to the screen (to the left or right, above, below, or centered), and the general shape of the screen (flat, concave or convex both ways, and pin, barrel or cylindrical). Click the CREATE! button to apply it to the grid.
4.3 The Evaluator Controls Window The Evaluator Controls window displays detailed feedback regarding the warp grid and its viability for use on the VP-790 in addition to providing whole grid/multiple points editing functionality, such as: • Sending the warp map to the VP-790 • Grid editing functions • Grid evaluation and validation Figure 9 illustrates the Evaluator Controls window: Figure 9: Evaluator Controls Window 4.3.
4.3.2 The Grid Editing Area 14B The Grid Editing control box includes editing tools for the entire grid: Rotation (clockwise) In the Rotate box, type in the number of degrees you require the grid to rotate, then click the Rotate button. i Note that the rotation degree that is set is always relative to the original setting of the grid (a new or a downloaded file). The rotation occurs around the center of the editable area.
Point Edit Control Point Edit Control allows you to manipulate the grid by: • Moving the entire row, column or grid • Snapping a point to the edge of the grid, to a row or a column • Locking the horizontal or vertical positions • Mirroring selected points horizontally or vertically i Note that the Point Edit Control functions are automatically checked by the preset creation function, based on what will be most efficient to use in the current preset options.
Figure 12: Extreme Angle Indication (in red) You can fix the conflicting angles and folds by moving the points until the red color around the point turns back to green. The grid points cannot move beyond the boundaries created by adjoining grid points; any conflicting fold points will turn black. Folds are fixed when the black point turns back to blue.
5 Preparing a Grid To prepare a grid do the following: • Edit an existing grid file or start a new grid • Use the Grid Designer PRESETS for initial settings • Use Grid Designer and Grid Editor to finalize the warp map • Upload it to the VP-790 (see Section 5.
5.1 Creating the Grid 9B You can either open a previously prepared grid (by clicking the Edit Grid button) or open a new grid. To create a new grid, click the New Grid button. The New Grid window appears: Figure 14: The New Grid Window Type the grid file name and click OK. The new grid appears in the main window. All New Grids start with a 2x2 grid. Editing the grid can be as simple as dragging and dropping the desired points with the selected point being highlighted with a large, black crosshair.
5.2 Define Presets To define the presets click the PRESETS button in the Grid Designer window. For a projector set above the center of a convex screen the setup is centered horizontally, top vertically; convex for Left to Right and Flat for Top to Bottom. Modifiers are set to none: Figure 16: Define the Presets The preset options selected best describe the curved screen in this example.
Click the CREATE button to create the preset warp grid, as illustrated in Figure 17: U U Figure 17: Initial Warp Grid for Convex Screen The preset warp grid illustrated in Figure 17, displays the corrections for both the U U keystone problem due to the position of the projector and the screen curvature.
Now perform the Scale Grid operation (also located in the Grid Editing section) until you get the closest match with this function that can be achieved. Be sure to test all adjustments to the grid on the actual surface using the Send Warp button located on the Evaluator Controls tool box. 5.3 Manual Adjustments Use the automatically enabled Mirror in H and adjust the grid points to ensure that the test pattern image fills the corners and straight edges of the curved screen in this setup.
At this stage, if the corners and edges cannot be further improved using Mirror in H (due to slight asymmetries in the curved screen setup), you can de-activate the function by unchecking it and then tweaking each point independently to get a perfect match. For this kind of setup (with an unusually short throw), the center and corners currently match, but the curved lower part does not. The current grid with a curved screen in its lower part, does not match.
Rarely will a given setup be symmetrically perfect so usually the warp grid will need to be fine tuned to get a perfectly uniform result that follows the edges of the screen perfectly. This can be accomplished by increasing the level of editing detail of your grid by clicking the Fine Grid Resample button. Each click of this button will double the level of detail of the grid editing in both the horizontal and the vertical dimension, up to a maximum of 17x17 grid points.
5.4 Uploading the Warp Map to the VP-790 12B To update or upload the Warp Map onto the VP-790, you need to connect it to your PC. To do so: 5.4.1 • Connect the PC to your VP-790 via the Ethernet (see Section 5.4.1) • Connect to the VP-790 via the Warp Generator software (see Section 5.4.2) • Upload the Warp file (see Section 5.4.
Figure 21: Local Area Connection Properties Window 6. Select Use the following IP Address, and fill in the details as shown in Figure 22. You can use any IP address in the range 192.168.1.1 to 192.168.1.255 (excluding 192.168.1.39) that is provided by your IT department. 7. Click OK. Figure 22: Internet Protocol (TCP/IP) Properties Window 5.4.1.
5.4.2 Connecting to the VP-790 via the Warp Generator Software 17B To connect to the VP-790 via the Warp Generator Software to upload or update the Warp map, do the following: 1. Click the Connect button on the top left hand side of the Warp Generator main window (see Figure 23). U U Figure 23: Click the Connect Button 2. One of two windows appears: The Connect to Unit window, if you are connecting for the first time or via a new IP number, see Figure 24.
The Warp Generator software is now ready to use, see Figure 26 Figure 26: VP-790 Warp Generator Main Window Connected 5.4.
5.4.3.1 Uploading via the Evaluator Controls Window 23B After updating/preparing the grid you can send it to the selected Warp Slot by clicking the SEND button in the Send Warp area. Figure 27: Sending a Map to a Slot The warp map is now stored in one of the VP-790 Warp memories (from 1 to 8) and appears as a warp file in the Warp files area in the main window. Once the Warp file appears in the window, you can upload that Warp file into a different slot.
