Is “raster” is a specific format or a general term (regarding CUPS printing library)
I have seen related to the CUPS library, these two files:
- OpenPrinting/cups-filters/blob/master/filter/imagetoraster.c
- OpenPrinting/cups-filters/blob/master/cupsfilters/raster.c
I'm not sure what the raster.c does exactly yet, but imagetoraster.c essentially takes a PNG/JPEG/etc. and "converts it to raster format" it sounds like. I don't quite understand what this means exactly. Some printers are "PostScript printers", others are "Raster printers", but I am not sure if this term "raster" means that there is some sort of "Printer Raster Format" like PNG or JPG, or if it's just an array of pixels of some sort, or something else. It seems that the printers would have some sort of standard format, but calling it "raster" seems a bit misleading since raster is basically an arbitrary pixel representation of something (from my understanding).
Hoping one could clarify what exactly is meant by raster in this CUPS filter / printing library. I keep thinking it's actually a IANA mime-type of some sort, but I'm not sure.
graphics cups image printing
edited Jan 24 at 8:25
Andy
2,07622662
asked Jan 22 at 13:04
Lance PollardLance Pollard
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migrated from unix.stackexchange.com Jan 23 at 15:06
This question came from our site for users of Linux, FreeBSD and other Un*x-like operating systems.
add a comment |
I have seen related to the CUPS library, these two files:
- OpenPrinting/cups-filters/blob/master/filter/imagetoraster.c
- OpenPrinting/cups-filters/blob/master/cupsfilters/raster.c
I'm not sure what the raster.c does exactly yet, but imagetoraster.c essentially takes a PNG/JPEG/etc. and "converts it to raster format" it sounds like. I don't quite understand what this means exactly. Some printers are "PostScript printers", others are "Raster printers", but I am not sure if this term "raster" means that there is some sort of "Printer Raster Format" like PNG or JPG, or if it's just an array of pixels of some sort, or something else. It seems that the printers would have some sort of standard format, but calling it "raster" seems a bit misleading since raster is basically an arbitrary pixel representation of something (from my understanding).
Hoping one could clarify what exactly is meant by raster in this CUPS filter / printing library. I keep thinking it's actually a IANA mime-type of some sort, but I'm not sure.
graphics cups image printing
edited Jan 24 at 8:25
Andy
2,07622662
asked Jan 22 at 13:04
Lance PollardLance Pollard
31.3k68204341
migrated from unix.stackexchange.com Jan 23 at 15:06
This question came from our site for users of Linux, FreeBSD and other Un*x-like operating systems.
Raster normally means that the image exists on a raster grid of pixels, i.e. that it is bitmapped and each pixel is addressable by anx,ycoordinate. That is in contrast to Postscript and vector images where a line or rectangle would be described by its endpoints or vertices.
– Mark Setchell
Jan 23 at 16:51
add a comment |
I have seen related to the CUPS library, these two files:
- OpenPrinting/cups-filters/blob/master/filter/imagetoraster.c
- OpenPrinting/cups-filters/blob/master/cupsfilters/raster.c
I'm not sure what the raster.c does exactly yet, but imagetoraster.c essentially takes a PNG/JPEG/etc. and "converts it to raster format" it sounds like. I don't quite understand what this means exactly. Some printers are "PostScript printers", others are "Raster printers", but I am not sure if this term "raster" means that there is some sort of "Printer Raster Format" like PNG or JPG, or if it's just an array of pixels of some sort, or something else. It seems that the printers would have some sort of standard format, but calling it "raster" seems a bit misleading since raster is basically an arbitrary pixel representation of something (from my understanding).
Hoping one could clarify what exactly is meant by raster in this CUPS filter / printing library. I keep thinking it's actually a IANA mime-type of some sort, but I'm not sure.
graphics cups image printing
edited Jan 24 at 8:25
Andy
2,07622662
asked Jan 22 at 13:04
Lance PollardLance Pollard
31.3k68204341
I have seen related to the CUPS library, these two files:
- OpenPrinting/cups-filters/blob/master/filter/imagetoraster.c
- OpenPrinting/cups-filters/blob/master/cupsfilters/raster.c
I'm not sure what the raster.c does exactly yet, but imagetoraster.c essentially takes a PNG/JPEG/etc. and "converts it to raster format" it sounds like. I don't quite understand what this means exactly. Some printers are "PostScript printers", others are "Raster printers", but I am not sure if this term "raster" means that there is some sort of "Printer Raster Format" like PNG or JPG, or if it's just an array of pixels of some sort, or something else. It seems that the printers would have some sort of standard format, but calling it "raster" seems a bit misleading since raster is basically an arbitrary pixel representation of something (from my understanding).
Hoping one could clarify what exactly is meant by raster in this CUPS filter / printing library. I keep thinking it's actually a IANA mime-type of some sort, but I'm not sure.
graphics cups image printing
graphics cups image printing
edited Jan 24 at 8:25
Andy
2,07622662
asked Jan 22 at 13:04
Lance PollardLance Pollard
31.3k68204341
edited Jan 24 at 8:25
Andy
2,07622662
asked Jan 22 at 13:04
Lance PollardLance Pollard
31.3k68204341
edited Jan 24 at 8:25
Andy
2,07622662
edited Jan 24 at 8:25
Andy
2,07622662
edited Jan 24 at 8:25
Andy
2,07622662
2,07622662
asked Jan 22 at 13:04
Lance PollardLance Pollard
31.3k68204341
asked Jan 22 at 13:04
Lance PollardLance Pollard
31.3k68204341
asked Jan 22 at 13:04
Lance PollardLance Pollard
31.3k68204341
31.3k68204341
migrated from unix.stackexchange.com Jan 23 at 15:06
This question came from our site for users of Linux, FreeBSD and other Un*x-like operating systems.
migrated from unix.stackexchange.com Jan 23 at 15:06
This question came from our site for users of Linux, FreeBSD and other Un*x-like operating systems.
Raster normally means that the image exists on a raster grid of pixels, i.e. that it is bitmapped and each pixel is addressable by anx,ycoordinate. That is in contrast to Postscript and vector images where a line or rectangle would be described by its endpoints or vertices.
– Mark Setchell
Jan 23 at 16:51
add a comment |
Raster normally means that the image exists on a raster grid of pixels, i.e. that it is bitmapped and each pixel is addressable by anx,ycoordinate. That is in contrast to Postscript and vector images where a line or rectangle would be described by its endpoints or vertices.
– Mark Setchell
Jan 23 at 16:51
Raster normally means that the image exists on a raster grid of pixels, i.e. that it is bitmapped and each pixel is addressable by an
x,y coordinate. That is in contrast to Postscript and vector images where a line or rectangle would be described by its endpoints or vertices.– Mark Setchell
Jan 23 at 16:51
Raster normally means that the image exists on a raster grid of pixels, i.e. that it is bitmapped and each pixel is addressable by an
x,y coordinate. That is in contrast to Postscript and vector images where a line or rectangle would be described by its endpoints or vertices.– Mark Setchell
Jan 23 at 16:51
add a comment |
1 Answer
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A raster is a grid of pixels of a particular format. For example the raster could have a RGB24 format. This would mean that one pixel in this grid, has an R, G and B component, of 8 bits each, representing 256 shades of each component.
The thing to note is that a raster is just pixel data.
Image formats, such as TIFF have a full specification about how the raster should be represented within the TIFF file, along side the header, metadata and tags that TIFF allows/requires.
answered Jan 24 at 8:24
AndyAndy
2,07622662
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A raster is a grid of pixels of a particular format. For example the raster could have a RGB24 format. This would mean that one pixel in this grid, has an R, G and B component, of 8 bits each, representing 256 shades of each component.
The thing to note is that a raster is just pixel data.
Image formats, such as TIFF have a full specification about how the raster should be represented within the TIFF file, along side the header, metadata and tags that TIFF allows/requires.
answered Jan 24 at 8:24
AndyAndy
2,07622662
add a comment |
A raster is a grid of pixels of a particular format. For example the raster could have a RGB24 format. This would mean that one pixel in this grid, has an R, G and B component, of 8 bits each, representing 256 shades of each component.
The thing to note is that a raster is just pixel data.
Image formats, such as TIFF have a full specification about how the raster should be represented within the TIFF file, along side the header, metadata and tags that TIFF allows/requires.
answered Jan 24 at 8:24
AndyAndy
2,07622662
add a comment |
A raster is a grid of pixels of a particular format. For example the raster could have a RGB24 format. This would mean that one pixel in this grid, has an R, G and B component, of 8 bits each, representing 256 shades of each component.
The thing to note is that a raster is just pixel data.
Image formats, such as TIFF have a full specification about how the raster should be represented within the TIFF file, along side the header, metadata and tags that TIFF allows/requires.
answered Jan 24 at 8:24
AndyAndy
2,07622662
A raster is a grid of pixels of a particular format. For example the raster could have a RGB24 format. This would mean that one pixel in this grid, has an R, G and B component, of 8 bits each, representing 256 shades of each component.
The thing to note is that a raster is just pixel data.
Image formats, such as TIFF have a full specification about how the raster should be represented within the TIFF file, along side the header, metadata and tags that TIFF allows/requires.
answered Jan 24 at 8:24
AndyAndy
2,07622662
answered Jan 24 at 8:24
AndyAndy
2,07622662
answered Jan 24 at 8:24
AndyAndy
2,07622662
answered Jan 24 at 8:24
AndyAndy
2,07622662
2,07622662
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Raster normally means that the image exists on a raster grid of pixels, i.e. that it is bitmapped and each pixel is addressable by an
x,ycoordinate. That is in contrast to Postscript and vector images where a line or rectangle would be described by its endpoints or vertices.– Mark Setchell
Jan 23 at 16:51