Da-Lite, the projector screen company has a great calculator here and even includes a brand and model reference.
Very simple THInk it over
You could calculate two perpendicular gradients to each image pixel point. If both gradient are small the pixel pertains to a flat region.
Here are two suggestions but are a little difficult to executeFake currency identifierBook reader
light is needed to reflect an image off a mirror...no light no reflection
40cm
is the nat sci
A projector simply projects images onto a wall or projection screen. Projectors are typically used to increase the image size for viewing by audiences. Projectors come in a variety of sizes, normally measured in Lumens which is the brightness of the light. This brightness will determine the size the image can project and the distance the projector can be from the screen. Slide projectors use light to project images from 35mm slides. Digital Projectors use light to project images from computers and DVD players.
what image does poverty project to foreign tourist
Projectors over 2000 lumens can illuminate a wall or screen in a well-lit room.
is the nat sci
kuykj
Camera obscura is used to project an image onto another surface. This can be used to show pictures to an audience, or to project an image you can trace for drawing.
Not by itself.
compression ratio=uncompressed image size/compressed size
yes
no
Place an image inside it and project on screen. Simple.