Casio YC-400 User Manual page 30

Using the PJ System Like an OHP Projector (Document Camera Mode)
Document camera images and Rough (Monitor) Images
When you place a document on the PJ Camera Stand in the Document Camera Mode, the
PJ Camera records its image (recorded image). Then PJ Camera Software automatically
performs a number of procedures on the image data, before finally projecting a document
camera image.
During the time it takes for these procedures to be performed, PJ Camera Software will
project a rough version of the image, which is similar to the image that appears on the PJ
Camera's monitor screen. This is the rough (monitor) image. The rough (monitor) image will
be replaced by the document camera image as soon as it becomes available.
The following shows the flow starting with recording of an image and ending with projection
of the document camera image.
Document Recording with the PJ Camera (Recorded Image)
Contour Extraction
Brightness Correction
Image Resolution Conversion
Document Camera Image Projection (Replaces the rough (monitor) image.)
Rough (monitor) image is projected.
Extracts the document portion from the recorded image and
adjusts its orientation so it is straight. See "What is contour
extraction?" for more information.
When you start up PJ Camera Software in the Business
Document startup mode, contour extraction is turned off
under initial default settings. To turn on automatic contour
extraction, display the operation bar, and then select
[Trapezoid Correction On] on the [Image] menu (so there is a
check mark next to Trapezoid Correction). You can also
toggle trapezoid correction on and off by pressing the space
bar on your computer.
Adjusts brightness and contrast to make text more legible.
Converts the image size to XGA (1024 × 768) (800 × 600 when
an SVGA computer screen is being used), which is the optimal
size for projection.
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