Office Picture Manager diffilculties Resizing Converting

[Vincent]

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?

--

 

[db]

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·´¯`·...¸>

DatabaseBen, Retired Professional

- Systems Analyst

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~~~~~~~~~~"share the nirvana" - dbZen



>

>



"Vincent" wrote in message news:1AD33FA5-7B13-4556-8C8C-B196D1B4EB09@microsoft.com...

> 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?

> --

>

 

[Bob I]

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?

 

[Steve Rindsberg]

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?