Re: [Gimp-user] Image resolution bad detection (?)
Thank you all for the responses, they have been useful to me. Sven Neumann wrote: Most likely your software embeds the resolution information into the Exif metadata and fails to update the resolution in the JFIF header. That's a minor problem as the resolution is really just some arbitrary number and pretty much meaningless for photographs. Ok, I can understand this; maybe the software just creates exif data for resolution, but doesn't care about the right JFIF header. I've set the Gimp to use 350x350 by default, that will do. There is a bug report about the JPEG plug-in failing to recognize the resolution in the Exif data. If you care, feel free to provide a patch to fix this. I see your point; but unfortunately it is not an option for me to try to do this. Despite I have worked as a developer, it is not an option for me to set a suitable development environment, with all the libraries and dependencies and all, and then get acquainted with the internals of the Gimp, and get acquainted with the coding style, and so on and so forth. I'd like to, but I simply don't have the time. All the same, I've discovered myself thinking that when the time is right, the Gimp would be one of the open source projects I'd like to get involved with (as a developer, maybe taking care of some bug or something) if I found my skills were good enough. Thanks for the tips, and thanks for all the wonderful work done by the developers of the Gimp. Regards Jaime ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
[Gimp-user] Image resolution bad detection (?)
Hello I use The Gimp to edit my photographs, which I shoot with a Canon EOS 50D. I shoot always RAW, and use the propietary Canon software (DPP) to process the pictures a bit before converting them to jpeg (max conversion quality) with a resolution of 350 dpi. But when I open this jpg with the Gimp, either through the 'print size' dialog, the 'image scale' dialog or the 'image properties' dialog, seems to me that the Gimp takes it as 72 dpi resolution. Out of curiosity, I've just open the same image with both the Gimp and Photoshop Elements, and Elements states that it has a resolution of 350 dpi (as expected). I had never noticed that! Thing is that every time I scale down an image, the Gimp sets 72 dpi as default for resolution. All of my images are at this (low) resolution now (which doesn't matter as I've kept the original RAW files). I didn't notice this when I was working with the Gimp, till a few days ago that a friend told me -when I showed him my pics- that I should keep resolution higher when downscaling jpgs. Am I missing something here? Any ideas? I must confess that I have never worried about the resolution before, and I don't think I understand this issue completely. TIA Jaime ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Image resolution bad detection (?)
On Mon, Sep 14, 2009 at 4:12 PM, Jaime Seuma jaims.se...@gmail.com wrote: I had never noticed that! Thing is that every time I scale down an image, the Gimp sets 72 dpi as default for resolution. maybe the gimp selects the default dpi as set in edit-preferences-default image All of my images are at this (low) resolution now (which doesn't matter as I've kept the original RAW files). I didn't notice this when I was working with the Gimp, till a few days ago that a friend told me -when I showed him my pics- that I should keep resolution higher when downscaling jpgs. Am I missing something here? Any ideas? I must confess that I have never worried about the resolution before, and I don't think I understand this issue completely. As long as you are using pixels as units for rescaling there is no problem with the DPI. GIMP works with pixels and thus the DPI is only an information so any program manipulating the image can know its actual dimensions. This is useful for example when printing or rescaling image to a natural size. You can always change the DPI of the image without modifying the actual pixels. -- LEGENY Jozef ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Image resolution bad detection (?)
Jaime Seuma schreef: Hello I use The Gimp to edit my photographs, which I shoot with a Canon EOS 50D. I shoot always RAW, and use the propietary Canon software (DPP) to process the pictures a bit before converting them to jpeg (max conversion quality) with a resolution of 350 dpi. But when I open this jpg with the Gimp, either through the 'print size' dialog, the 'image scale' dialog or the 'image properties' dialog, seems to me that the Gimp takes it as 72 dpi resolution. Out of curiosity, I've just open the same image with both the Gimp and Photoshop Elements, and Elements states that it has a resolution of 350 dpi (as expected). I had never noticed that! Thing is that every time I scale down an image, the Gimp sets 72 dpi as default for resolution. All of my images are at this (low) resolution now (which doesn't matter as I've kept the original RAW files). I didn't notice this when I was working with the Gimp, till a few days ago that a friend told me -when I showed him my pics- that I should keep resolution higher when downscaling jpgs. Am I missing something here? Any ideas? I must confess that I have never worried about the resolution before, and I don't think I understand this issue completely. TIA Jaime ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user See if this helps: http://www.scantips.com/basics01.html as i learned this morning from Bob Long André den Oudsten ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Image resolution bad detection (?)
Hi, On Mon, 2009-09-14 at 16:12 +0200, Jaime Seuma wrote: I use The Gimp to edit my photographs, which I shoot with a Canon EOS 50D. I shoot always RAW, and use the propietary Canon software (DPP) to process the pictures a bit before converting them to jpeg (max conversion quality) with a resolution of 350 dpi. But when I open this jpg with the Gimp, either through the 'print size' dialog, the 'image scale' dialog or the 'image properties' dialog, seems to me that the Gimp takes it as 72 dpi resolution. Out of curiosity, I've just open the same image with both the Gimp and Photoshop Elements, and Elements states that it has a resolution of 350 dpi (as expected). Most likely your software embeds the resolution information into the Exif metadata and fails to update the resolution in the JFIF header. That's a minor problem as the resolution is really just some arbitrary number and pretty much meaningless for photographs. There is a bug report about the JPEG plug-in failing to recognize the resolution in the Exif data. If you care, feel free to provide a patch to fix this. Sven ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
[Gimp-user] Image Resolution and Color Depth
Hi, I have a photo that I must to change so so the maximum Image File Size will be 62,500 bytes, the 'Image Resolution' must be 320 pixels high by 240 pixels wide, and the Image Color Depth must be 24-bit color. The Image is in JPG format now, and has 2128 pixels width, 2832 pixels hight, X-Resolution 72,000 pixels/inch and Y-Resolution 72,000 pixels/inch in the Gimp. The 'Image Resolution' abowe meant that that I must to change in Gimp the Image width to 240 pixels and hight to 320 pixels, right? The 'Image Resolution' has nothing to do with X-Resolution and Y-Resolution, right? How can I know whether the Image has Color Depth 24-bit color? Any advices will be appreciated! -- Regards, Paul Csanyi http://www.freewebs.com/csanyi-pal/index.htm ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Image Resolution and Color Depth
Hi Paul, On Tue, Aug 12, 2008 at 6:02 PM, Csanyi Pal [EMAIL PROTECTED] wrote: Hi, I have a photo that I must to change so so the maximum Image File Size will be 62,500 bytes, the 'Image Resolution' must be 320 pixels high by 240 pixels wide, and the Image Color Depth must be 24-bit color. The Image is in JPG format now, and has 2128 pixels width, 2832 pixels hight, X-Resolution 72,000 pixels/inch and Y-Resolution 72,000 pixels/inch in the Gimp. The 'Image Resolution' abowe meant that that I must to change in Gimp the Image width to 240 pixels and hight to 320 pixels, right? The 'Image Resolution' has nothing to do with X-Resolution and Y-Resolution, right? Yes How can I know whether the Image has Color Depth 24-bit color? If the item selected in the Image-Mode menu is 'RGB' Any advices will be appreciated! -- Regards, Paul Csanyi http://www.freewebs.com/csanyi-pal/index.htm ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user David ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Image Resolution and Color Depth
David Gowers [EMAIL PROTECTED] writes: Hi David, Hi Paul, On Tue, Aug 12, 2008 at 6:02 PM, Csanyi Pal [EMAIL PROTECTED] wrote: I have a photo that I must to change so so the maximum Image File Size will be 62,500 bytes, the 'Image Resolution' must be 320 pixels high by 240 pixels wide, and the Image Color Depth must be 24-bit color. The Image is in JPG format now, and has 2128 pixels width, 2832 pixels hight, X-Resolution 72,000 pixels/inch and Y-Resolution 72,000 pixels/inch in the Gimp. How can I know whether the Image has Color Depth 24-bit color? If the item selected in the Image-Mode menu is 'RGB' This Image has only one layer, the background layer. In the Image-Mode menu 'RGB' is gray but the 'Grayscale' and 'Index..' aren't gray, so I can select them. But, in the Channels I can see there Red, Green, Blue and Alfa channel, and in the Title line of the Image window there I can see: ImageName.jpg-5.0 (RGB, 1 layer) 2128x2832. I think that, that this Image is RGB, right? -- Regards, Paul Csanyi http://www.freewebs.com/csanyi-pal/index.htm ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Image Resolution and Color Depth
Hi Paul, On Tue, Aug 12, 2008 at 7:23 PM, Csanyi Pal [EMAIL PROTECTED] wrote: David Gowers [EMAIL PROTECTED] writes: Hi David, Hi Paul, On Tue, Aug 12, 2008 at 6:02 PM, Csanyi Pal [EMAIL PROTECTED] wrote: I have a photo that I must to change so so the maximum Image File Size will be 62,500 bytes, the 'Image Resolution' must be 320 pixels high by 240 pixels wide, and the Image Color Depth must be 24-bit color. The Image is in JPG format now, and has 2128 pixels width, 2832 pixels hight, X-Resolution 72,000 pixels/inch and Y-Resolution 72,000 pixels/inch in the Gimp. How can I know whether the Image has Color Depth 24-bit color? If the item selected in the Image-Mode menu is 'RGB' This Image has only one layer, the background layer. In the Image-Mode menu 'RGB' is gray but the 'Grayscale' and 'Index..' aren't gray, so I can select them. But, in the Channels I can see there Red, Green, Blue and Alfa channel, and in the Title line of the Image window there I can see: ImageName.jpg-5.0 (RGB, 1 layer) 2128x2832. I think that, that this Image is RGB, right? Yes, the title is also a good guide. Actually, I believe the 'proper', logical way to do this is through Image-Properties. The 'Colorspace' property specifies whether the image is rgb, gray, or indexed. David ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Image Resolution and Color Depth
David Gowers [EMAIL PROTECTED] writes: Hi David, On Tue, Aug 12, 2008 at 7:23 PM, Csanyi Pal [EMAIL PROTECTED] wrote: David Gowers [EMAIL PROTECTED] writes: On Tue, Aug 12, 2008 at 6:02 PM, Csanyi Pal [EMAIL PROTECTED] wrote: I have a photo that I must to change so so the maximum Image File Size will be 62,500 bytes, the 'Image Resolution' must be 320 pixels high by 240 pixels wide, and the Image Color Depth must be 24-bit color. The Image is in JPG format now, and has 2128 pixels width, 2832 pixels hight, X-Resolution 72,000 pixels/inch and Y-Resolution 72,000 pixels/inch in the Gimp. How can I know whether the Image has Color Depth 24-bit color? If the item selected in the Image-Mode menu is 'RGB' This Image has only one layer, the background layer. In the Image-Mode menu 'RGB' is gray but the 'Grayscale' and 'Index..' aren't gray, so I can select them. But, in the Channels I can see there Red, Green, Blue and Alfa channel, and in the Title line of the Image window there I can see: ImageName.jpg-5.0 (RGB, 1 layer) 2128x2832. I think that, that this Image is RGB, right? Yes, the title is also a good guide. Actually, I believe the 'proper', logical way to do this is through Image-Properties. The 'Colorspace' property specifies whether the image is rgb, gray, or indexed. I haven't that option: Image-Properties maybe because I'm using Gimp version 2.2. Why I haven't this option? -- Regards, Paul Csanyi http://www.freewebs.com/csanyi-pal/index.htm ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Image Resolution and Color Depth
David Gowers [EMAIL PROTECTED] writes: I haven't that option: Image-Properties maybe because I'm using Gimp version 2.2. Why I haven't this option? In 2.2 look at View-Info owen ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Image Resolution and Color Depth
Owen [EMAIL PROTECTED] writes: David Gowers [EMAIL PROTECTED] writes: I haven't that option: Image-Properties maybe because I'm using Gimp version 2.2. Why I haven't this option? In 2.2 look at View-Info I find it. It's disturbing to me that that there I can see the 'Screen type: RGB Color' and not something like: 'Image Color type: RGB Color'. I find the Color Depth and it's 24 bit depth. -- Regards, Paul Csanyi http://www.freewebs.com/csanyi-pal/index.htm ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Image Resolution and Color Depth
Csanyi Pal wrote: In 2.2 look at View-Info It's disturbing to me that that there I can see the 'Screen type: RGB Color' and not something like: 'Image Color type: RGB Color'. I find the Color Depth and it's 24 bit depth. Hi I find it disturbing that you are using a several years old version of GIMP ;) In later versions more relevant properties and better names are shown. Best regards, Martin Nordholts ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Image Resolution and Color Depth
Owen [EMAIL PROTECTED] writes: David Gowers [EMAIL PROTECTED] writes: I haven't that option: Image-Properties maybe because I'm using Gimp version 2.2. Why I haven't this option? In 2.2 look at View-Info I find it. It's disturbing to me that that there I can see the 'Screen type: RGB Color' and not something like: 'Image Color type: RGB Color'. I find the Color Depth and it's 24 bit depth. Image-Image-Mode gives the mode of the image Screen resolution is a monitor characteristic, not a Gimp function Gimp is 8 bit Owen ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
[Gimp-user] image resolution
There's much talk recently about HDR images. Could someone with more technical expertise than I possess comment on HighDef television and whether there will be soon something like a HighDef computer monitor? Specifically, for a long time I have been making images for web content at 72 dpi under the assumption that it is the highest resolution needed for display on the computer screen. Will this soon change? And, if so, what sort of resolutions will be needed? How will this change the production of images for web content? Thank-you, David. ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] image resolution
Quoting David Heino [EMAIL PROTECTED]: There's much talk recently about HDR images. Could someone with more technical expertise than I possess comment on HighDef television and whether there will be soon something like a HighDef computer monitor? Specifically, for a long time I have been making images for web content at 72 dpi under the assumption that it is the highest resolution needed for display on the computer screen. Will this soon change? And, if so, what sort of resolutions will be needed? How will this change the production of images for web content? HDR imaging and HDTV are quite unrelated. The high definition in HDR is in reference to the color depth of the individual pixels while for HDTV it is referring to the pixel density of the image. The GIMP currently supports up to 8-bits per color per pixel 'color depth' while HDR imaging generally requires 10 or more (usually the jump is made to 16- or 32-bit color depths; and the use of floating point representation in some formats). Computer monitors and HDTV only requires 8-bit colors and so the images that the GIMP produces are quite satisfifactory for that purpose (and the pixel density aspect of HDTV is basically irrelevant). The need for greater color depths arises when _editing_ the images. Many cameras and scanning devices provide data that employs deeper color depths and the GIMP is currently unable to handle that extra information; it would be discarded when the data is imported from the device (or HDR file). Note that this information would also be discarded when sent to the monitor or HDTV (which only handles 8BPP depth) but it is useful during editing to have that information. The situation is very similar to that of audio editing and production: even though the sound quality of CDs is limited to 16-bit samples sampled at 41100Hz, it is beneficial to handle higher quality versions (24-bit at 96kHz, for example) during the editing process. ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
[Gimp-user] Image Resolution
Is there way to change the default image resolution in the Gimp for Windows so that I do not get the following message[URL=""> Yahoo! Shopping Find Great Deals on Holiday Gifts at Yahoo! Shopping ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Image Resolution
Hi, Demetrius Jones [EMAIL PROTECTED] writes: Is there way to change the default image resolution in the Gimp for Windows so that I do not get the following message [URL=http://imageshack.us][IMG]http://img247.imageshack.us/img247/3944 /gimpmessage7nk.jpg[/IMG][/URL] You are getting this message because the image file you are opening has an invalid image resolution. Changing the default resolution is not going to change that. You better fix the image instead. Sven ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Image Resolution
Sven Neumann wrote: Hi, Demetrius Jones [EMAIL PROTECTED] writes: Is there way to change the default image resolution in the Gimp for Windows so that I do not get the following message [URL=http://imageshack.us][IMG]http://img247.imageshack.us/img247/3944 /gimpmessage7nk.jpg[/IMG][/URL] You are getting this message because the image file you are opening has an invalid image resolution. Changing the default resolution is not going to change that. You better fix the image instead. How could he fix the image? Peace... Tom ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Image Resolution
Am 29.12.2005 um 16:50 schrieb Tom Williams: You are getting this message because the image file you are opening has an invalid image resolution. Changing the default resolution is not going to change that. You better fix the image instead. How could he fix the image? Hmm, probably by setting correct values for resolution? May be to doing a man convert with image magick would point into a direction possibly to go. Greetings, lexA Peace... Tom ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user --- Live is like a chocolate box, you never know what you wanna get... GPG Signatur auf http://wernicke-online.net/Impressum/ prüfen PGP.sig Description: Signierter Teil der Nachricht ___ Gimp-user mailing list Gimp-user@lists.XCF.Berkeley.EDU https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-user
Re: [Gimp-user] Image resolution out of bounds Message
When I open files stored on a Photo CD scanned by a Fuji Frontier, the following GIMP Message appears: Image resolution is out of bounds, using the default resolution instead. I'm new to Gimp, but don't find any reference to this message in my Grokking the Gimp text. I've just picked up 5x7 Frontier prints made from Gimp'd .jpg files and they look fine to my eyes -- in spite of the resolution message. Can anyone point me to what it's about? Resolution is not the number of pixels, but rather the size of the pixels. The usual unit of measurement is dots per inch (dpi). When the Gimp is opening a TIFF or JPEG file it reads the tag inside the file that specifies the resolution. If the value doesn't make enough sense, the Image resolution is out of bounds message is output. In v1.2.3 the following definitions are used: #define GIMP_MIN_RESOLUTION 5e-3 #define GIMP_MAX_RESOLUTION 65536.0 It would be interesting to know what the value was that it didn't like, but in the end it doesn't matter. You're probably going to change the dpi before you print it anyway... The image data is not affected by this condition - if your pictures look ok then they probably are. __ David Burren ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
[Gimp-user] Image resolution out of bounds Message
When I open files stored on a Photo CD scanned by a Fuji Frontier, the following GIMP Message appears: Image resolution is out of bounds, using the default resolution instead. I'm new to Gimp, but don't find any reference to this message in my Grokking the Gimp text. I've just picked up 5x7 Frontier prints made from Gimp'd .jpg files and they look fine to my eyes -- in spite of the resolution message. Can anyone point me to what it's about? Thanks, Clint -- Clint Harshaw [EMAIL PROTECTED] ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
[Gimp-user] Image resolution
Hello all, I did a search from the mail archives but coun't find a match. I just installed gimp-1.3.7. When I try to open up a jpeg (or any image) I get a message stating Image resolution is out of bounds, using the default resolution instead. then the image will load as a transpanency and not let me view or edit it. What setting do i need to change to solve this problem ? Thanks for your help. ___ Gimp-user mailing list [EMAIL PROTECTED] http://lists.xcf.berkeley.edu/mailman/listinfo/gimp-user
