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#1
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Office Picture Manager diffilculties Resizing Converting
As I understand the measure Pixel is a relative one, depending on
(screen/printer) resolution One pixel measures different. Yet pixels are treated like something absolute, like one measure to add to centimeters and inches. Which therefor makes it difficult to convert 1000 pixels to a compareable measurement. Converting cm to inches is merely a question of multiplying a number, this can never be done using pixels... Right? Did I miss something? -- |
#2
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Office Picture Manager diffilculties Resizing Converting
picture manager doesn't
have all the fancy features that a full fledge graphics program can offer. for example, in a full fledge graphics program you can set the image to 10 pixels per inch and set the canvas to be 20" by 30" which would make overall size of the file on the disk to be perhaps 2 megs. but the above would be a image of poor quality unless you were being artistic. on the other hand you can set an image to be 1000 pixels per inch and set the canvas size to 4" x 6" which would make the overall size of the file on the disk to maybe 80 megs so as you can see by the above pixels are not absolute or relative to the size of the canvas you just need to use a high level graphics editor to manage these variables. incidentally, to print a good looking 4 x 6 picture it should have between 260 - 300 pixels per inch which would make its file size around 2 megs. -- db·´¯`·...¸)))º DatabaseBen, Retired Professional - Systems Analyst - Database Developer - Accountancy - Veteran of the Armed Forces - Microsoft Partner - @hotmail.com ~~~~~~~~~~"share the nirvana" - dbZen "Vincent" wrote in message ... As I understand the measure Pixel is a relative one, depending on (screen/printer) resolution One pixel measures different. Yet pixels are treated like something absolute, like one measure to add to centimeters and inches. Which therefor makes it difficult to convert 1000 pixels to a compareable measurement. Converting cm to inches is merely a question of multiplying a number, this can never be done using pixels... Right? Did I miss something? -- |
#3
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Office Picture Manager diffilculties Resizing Converting
No, a pixel is a unit of information it contains the color of a spot.
How many of those spots are placed in particular area is called resolution. Whether you use CM or inches is immaterial as that is merely defining the same area using a different unit of measure. Vincent wrote: As I understand the measure Pixel is a relative one, depending on (screen/printer) resolution One pixel measures different. Yet pixels are treated like something absolute, like one measure to add to centimeters and inches. Which therefor makes it difficult to convert 1000 pixels to a compareable measurement. Converting cm to inches is merely a question of multiplying a number, this can never be done using pixels... Right? Did I miss something? |
#4
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Office Picture Manager diffilculties Resizing Converting
In article , Vincent wrote:
As I understand the measure Pixel is a relative one, depending on (screen/printer) resolution One pixel measures different. If we're talking about pixels in an image file, a pixel is just a series of numbers representing one color sample (dot if you like) in the image. When the image is displayed or printed, it appears on a device that has measurable pixel sizes (a 1200 dot per inch printer, for example). Yet pixels are treated like something absolute, like one measure to add to centimeters and inches. When a program imports an image, it usually needs to assign it some size in inches/cm/whatever. It needs to know how large to display the image. Some images can also contain data that says "Make me 5" wide" or similar. Some don't. In the case of the ones that don't, the program has to make an arbitrary decision; PowerPoint, for example, assumes 72 or 96 or some other DPI value, depending on version. So a 1000 pixel image will import at 1000/72 inches. Which therefor makes it difficult to convert 1000 pixels to a compareable measurement. Converting cm to inches is merely a question of multiplying a number, this can never be done using pixels... Right? Not sure I understand this last ... can you explain what you're after here? |
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