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What are the main problems of steganography?
The biggest problem steganography faces is that of size. There is a limit to the size of a file which you can embed information into. For instance if you take a 16 bit image where each pixel is 4 bytes in three colours RGB you can only reliable encode the lower byte before the colour changes become visible in the viewed image. This means that the image you are embedding your data in has to be 1 quarter larger than the encrypted data itself.
How does compression effect images?
Any type of compression will ideally reduce the size of an image. There are two types of compression which describe how they affect images:"Lossy" compressionThis type of compression reduces the size of the image by removing some data from it. This generally cause, effect the quality of the image, which mean it will reduce your image quality."Lossless" compressionThis type of compression reduces the size of the image by changing the way in which the data is stored. Therefore this type of compression will make no changes in your image.
What is a computer image?
It is an image on your computer.
How do you put an image from your documents you dont have or know image urland is not in wiki's data and you want to use that pic?
If you can get the image on your computer screen, try using Screen dash. You can then capture the image of your screen then edit the photo, save the image, or image host it.
What is it called to remove an unwanted portion of an image?
to remove an unwanted portion of an image is to crop the image
How is Christ the image of the invisible God?
Christ is God> His blood is called the blood of God. Acts20:28 His physical body is the visible image of his invisible Spirit. Like how our body is the visible image of our invisible soul.
What layer is visible when viewing an image of the sun.?
photosphere
What is meant by the term pixelation?
"Pixelated" is when an image is made up of tiny visible pixel images. It can also mean that an image has been converted from a printed image to a digitized image.
Which type of photography captures light in regions below or above the visible spectrum and renders it as a visible image?
Infrared photography captures light in regions below the visible spectrum and renders it as a visible image. It involves using film or sensors sensitive to infrared light to create unique and ethereal images.
Where should I place the watermark on a photo to ensure it is both visible and does not detract from the image's overall aesthetic?
To ensure a watermark is both visible and does not detract from the image's aesthetic, place it in a corner or along the edge of the photo. Avoid placing it in the center or over important elements of the image.
How many bands of light does a landsat image have?
It has 7 bands, only 3 of which are in the visible.
How will the position and intensity of image will be affected if the lower half of the mirror is painted?
If the lower half of the mirror is painted, the image will only be visible in the upper half of the mirror. The intensity of the image will remain the same in the visible portion of the mirror, but it will be absent in the painted lower half. The position of the image will not be affected, as it will still appear at the same distance behind the mirror as the object is in front of it.
What produces an image of a specimen by passing visible light through it?
A light microscope produces an image of a specimen by passing visible light through it. This light passes through the specimen, is refracted and magnified by the lenses in the microscope, and then projected to create a magnified image that can be viewed through the eyepiece or captured using a camera.
How much is a quarter that is so off center that you can't tell the date?
The value of an off-center strike depends on how much of the coin's full image is visible: 80% visible - roughly $5 60% visible - $30 10% visible - $100
What is the difference in image quality between jpg 20 and jpg 100 compression levels?
The difference in image quality between JPG 20 and JPG 100 compression levels is that JPG 20 has higher compression, resulting in lower image quality and more visible compression artifacts, while JPG 100 has lower compression, resulting in higher image quality with less visible compression artifacts.
Name the two types of watermark?
The two types of watermark are visible watermarks, which are overlaid on top of an image and are easily noticeable, and invisible watermarks, which are embedded within the image data and are not visible to the naked eye.
How could you demonstrate that an image as indeed a real image?
Real images can be produced on a plane and they would be inverted. You can demonstrate that a real image is there by placing a piece of thin tissue there, or blowing smoke through the area. In either case, the image will become visible.
