593. Convenient Features Projecting an Image from an Angle (Geometric CorrectionTool in Image Express Utility Lite)The Geometric Correction Tool (GCT) function allows you to correct distortion of images projected even from anangle.What you can do with GCT• The GCT feature includes the following three functions• 4-point Correction: You can fit a projected image within the border of the screen easily by align the four cornersof an image to the ones of the screen.• Multi-point Correction: You can correct a distorted image on the corner of a wall or irregular shaped screenby using many separated screens to correct the image as well as 4-point Correction.• Parameters Correction: You can correct a distorted image by using a combination of transformational rulesprepared in advance.This section will show an example for use with 4-point Correction.For information about “Multi-point Correction” and “Parameters Correction”, see the help file of Image ExpressUtility Lite. (→ page 56, 58)• Your correction data can be stored in the projector or your computer which can be restored when necessary.• The GCT function is available with a USB cable, wired or wireless LAN connection, and video cable.Projecting an Image from an Angle (GCT)This section will show an example for use with USB Display (using a USB cable to connect a computer and the pro-jector).• The USB Display function will automatically display the control window• For a video cable or LAN connection, install and start Image Express Utility Lite in your computer beforehand. (→page 54)Preparation: Adjust the projector position or the zoom so that the projected image can cover the whole screen area.1. Click the “ ” (Picture) icon and then the “ ” button.The “4-point Correction” window will be displayed.2. Click the “Start Correction” button and then “Start 4-point Correction” button.A green frame and a mouse pointer ( ) will be displayed.• Four [ • ] marks will be appeared at four corners of the green frame
