Questions tagged with this tag can refer to graphical images, e.g. a .jpg or .gif file, or system snapshots, which are also called "images".

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60
votes
12answers
33k views

How to get information about an image(picture) from linux commandline?

Am working on a web-app, and currently am migrating some stuff from an old app, but I hate that I have to open an image editor to get some info about images am migrating. Things like image dimensions. ...
45
votes
4answers
2k views

Does only GIF support animation?

Is GIF the only major image format that supports animation? With GIF images being a relatively poor quality format, why are they the only one that supports animation in most viewers / browsers?
37
votes
1answer
27k views

Combine multiple images using ImageMagick

I would like to combine multiple images into one image using ImageMagick. To explain a little better, I want the result to look similar to this: That is, I have a number of screen shots, and I want ...
33
votes
13answers
57k views

How can I combine 30,000 images into a timelapse movie?

I have taken 30,000 still images that I want to combine into a timelapse movie. I have tried QuickTime Pro, TimeLapse 3, and Windows Movie Maker, but with such a huge amount of images, each of the ...
31
votes
14answers
89k views

How to split a multipage TIFF file on Windows?

I thought Adobe Photoshop could do everything, but apparently it cannot read multipage TIFF files. I have a TIFF file with four pages, and I need to edit one of the pages. Windows Picture Viewer can ...
27
votes
8answers
28k views

JPEG vs PNG vs BMP vs GIF

I would like to know which one of these formats requires less memory for the same quality of the picture, and what the main differences between the formats are.
24
votes
8answers
66k views

GIMP: change one colour to another?

In GIMP, I have a green button GIF image: it shades from dark green to light green, against a transparent background. I would like to change it to blue, and keep the shading, so it shades from dark ...
22
votes
2answers
1k views

How does recaptcha know you aren't entering bogus translations of the pictures [closed]

From what I understand, Captchas are text that have been distorted by the application of filters, noise and other miscelaneous algorithms. Therefore, to find out whether the person's reading ability ...
22
votes
5answers
12k views

How to extract image from PDF file

I currently use Foxit's PDF reader, and I recently downloaded an image from the Internet, but it is inside a PDF file. How do I extract this image? Operating system is Windows 7.
22
votes
5answers
107k views

Windows 7: Image thumbnails fail to appear

All right, I've got a pretty strange one here. Since I installed Windows 7 on this machine some time ago, image thumbnails have never worked properly. For the vast majority of images, they ...
18
votes
11answers
3k views

Version control for images

When working with images, I tend to start saving things as image_001.png and image_002.png for different versions of the same image. Being a programmer, I know that that isn't really a good way to do ...
18
votes
11answers
15k views

How do I batch change the date taken information in EXIF data?

I use F-Spot to manage my images. For one set of images, the dates somehow got messed up and they all are marked as September 1st 2007. I'd like to change the date taken information to a different ...
17
votes
3answers
12k views

How to rotate images automatically, based on exif data

When I make pictures with my camera (Olympus E-520), in the exif data the orientation is stored. The standard image viewer on Ubuntu is displaying this images right. Windows viewer however not. Is ...
17
votes
6answers
22k views

Is there a way to open/import an SVG file with Photoshop CS2 or CS3?

Title pretty much says it all... Is there a way to open/import an SVG file with Photoshop CS2 or CS3? I am on Mac OS X but cross platform solutions are preferred. Illustrator can open SVG files, so I ...
16
votes
3answers
3k views

Is it possible to store arbitrary data in an image file?

Is it possible to store arbitrary data such as documents or a program in the form of an image file, such as a PNG image? My concern is that someone could encode data for use by malware into an image ...
16
votes
1answer
641 views

Large image to clipboard freezes computer

So I was messing around with some height map images and found this one: http://upload.wikimedia.org/wikipedia/commons/1/15/Srtm_ramp2.world.21600x10800.jpg This image is 21600x10800 when I right ...
15
votes
12answers
50k views

How do I save an image PDF file as an image?

I have a PDF that contains a scan image of a document. I want to save the contents of this PDF as an image so that I can then run it through an OCR program that only accepts .jpg, .png, and .gif type ...
15
votes
8answers
25k views

How to convert video to images?

How can I convert a video file to a sequence of images, for example one frame every N seconds. Can mplayer or ffmpeg do this? I have used MPlayer to grab screenshots manually but I would like to ...
15
votes
7answers
4k views

Software for creating icons? [closed]

I'm a developer but not a very good designer. I'm looking for some lightweight software for creating icons for my applications. I have a logo of the product and want to make it an icon, so any ...
15
votes
7answers
6k views

Software to clean up photos of whiteboards and documents?

I take a lot of photos of whiteboards, blackboards, and so on for teaching purposes (examples online through May 2010). I'm interested in cleaning them up for archival purposes, preferably using ...
14
votes
5answers
550 views

Good tool for finding photo duplicates based on image data [closed]

Anyone know of a good (and preferably free) tool for finding photo duplicates based on the photos themselves? So, not filename, filesize etc., but how the photos look like. Would be nice if it managed ...
13
votes
5answers
52k views

How can I create a PDF from scanned images I have in my folder? [closed]

I want something simple. I have a folder with 10 images and I would like to grab all of them, place each in a single "page" and into a single pdf file. Is there a simple GUI-based software for this? ...
13
votes
1answer
598 views

Why shouldn't we open an image in an email?

Most email clients do not display an image by default in the content of an email. But I don't understand this yet. How can displaying image job attack the computer?
13
votes
1answer
13k views

Is there a simple way to print multiple images on the same page in Mac OS X?

I'm looking for a simple way to print multiple images on the same page. The default image printing function in Windows lets me select how many images I want on each page. How do I do this on the Mac? ...
13
votes
2answers
506 views

What steps are taken to create the optical illusion “Autostereograms”? [closed]

There are many images in which letters/text appear when you stare hard into them, called Autostereograms. I want to know how they are created. This is an example (here's the hidden image): I want ...
12
votes
6answers
2k views

What is the best method to remove duplicate image files from your computer

I have a lot of duplicate image files on my Windows computer, in different subfolders and with different filenames. What Python script or freeware program would you recommend for removing the ...
12
votes
3answers
4k views

Is it possible to view images in a terminal?

I have ssh access to my web server. I have some image files there and I would like to see a preview of. Is there a tool that will help me? Is there a curses-based viewer that will approximate the ...
12
votes
2answers
2k views

What is the largest size of a 640x480 JPEG?

I'm creating a data storage device that takes a certain number of pictures of the night sky over a couple of hours, and the pictures will be downloaded right after they are all taken. The memory card ...
12
votes
3answers
15k views

How do I extract a background from a Windows 7 Theme file?

Pretty obvious, How do I extract a background from a Windows 7 Theme file? I like the background pics from some of the themes I've downloaded, but is there anyway I can get the pictures (background ...
11
votes
6answers
9k views

Imaging new hard drive in Windows 7 laptop?

I'm upgrading my Windows 7 laptop to a new hard drive. How can I clone or image the old hard drive over to the new hard drive, so that it looks like nothing has changed (other than the new hard ...
11
votes
4answers
23k views

How do I burn .img files onto floppy disk?

I want to "burn" 3 DOS 6.22 floppy disks. I have 3 .img files but I can't "burn" these .img files onto a floppy. I get the message that the file is too big for the target. What tool can I use (I used ...
11
votes
4answers
2k views

Is there an image viewer that takes images on STDIN?

I'm looking for an image viewer that takes data on stdin and can be run like: cat image.png | imageviewer
11
votes
9answers
18k views

IrfanView Linux alternative? [duplicate]

I'm looking for some Linux alternative to IrfanView (image viewer). At best, it should have all its features, the same controls (both mouse and kbd) or fully adjustable, and be as quick. In ...
11
votes
4answers
34k views

Prevent Outlook 2010 Insert Picture resizing image

When I "Insert Picture" a JPEG in Outlook 2010 it automatically resizes the image and, I think, recompresses it too. I realise this would be useful for photographs or for people who try to email 1MB ...
11
votes
8answers
6k views

Free visual similarity image for a local hard drive search?

I'm looking for a desktop search engine for finding images on my local hard drive with high visual similarity. I've only found paid for ones so far. It could be Linux or windows one, either would be ...
11
votes
6answers
6k views

Why Outlook 2007 pasted images are larger than original?

I have been using Outlook 2007 for over a year with no image problems. Around September 1st, images that I paste into messages are enlarged in the messages. This happends with WinSnap, the Vista ...
10
votes
4answers
10k views

Is there any drawback to just renaming jpeg files to jpg?

A client sent me many jpeg files that I'd like to rename to jpg. Is this just a matter of renaming them, or should I open them with an image editing program and then saving them as jpg?
10
votes
5answers
5k views

Tool for comparing two images?

I have two images that are slightly different. (The second is actually generated by some manipulation in MatLab). I need some way to compare these two images.Some utility that can highlight where the ...
10
votes
3answers
31k views

How could I find out the path to the current desktop image?

I have Windows 7 displaying random images every minute from all of my photo directories and every so often there is one I really want to see again. How can I either always display on the screen the ...
10
votes
6answers
16k views

Editing JPEG EXIF properties

How can I edit EXIF properties of JPEG files on a Windows machine? Some image editing utilities handle the Rotation property wrong, which leaves me needing to make manual edits after rotating images ...
10
votes
6answers
37k views

How to convert .jpg images to .eps?

How can I convert a .jpg image to an .eps?
10
votes
9answers
38k views

I'm unable to mount a DMG, getting a “no mountable filesystems” error

I downloaded a DMG of some commercial Mac software (CSSEdit) but I found that the DMG wouldn't mount. I tried another image from the same company, and then a number of images I had laying around from ...
9
votes
4answers
4k views

Can you really get a trojan in an image file and if so how will it be executed?

I've just digitized a couple of LPs and needed some cover art. My scanner isn't big enough to scan the album so I searched for and downloaded the images off the net. When I did so Avast reported that ...
9
votes
6answers
68k views

Automatically resize picture/image in Word?

I'm using Microsoft Word 2007. I have several large screenshots that need to be inserted into the document at various places. When I paste the pictures, I have to manually resize them to fit within ...
9
votes
3answers
12k views

How to convert a multi-page PDF file to PNG files, with one PNG file per page of the PDF document (Windows)

Is there a software that could convert a multi-page PDF file to PNG files, and could automatically save one PNG file per page of the PDF document (for Windows 7)? I have tried a few virtual printer ...
9
votes
5answers
24k views

Mount a partition from dd-created image of a HDD

I have an image of the entire disk created using dd. The disk structure follows: kent@cow:~$ sudo fdisk -l Disk /dev/sda: 750.1 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders ...
9
votes
4answers
10k views

What software works well for viewing massive TIFF images on Windows 7?

Today I saw an article about a half-gig, 24000 square-pixel high-res composite image of the moon. (This is a much smaller version of the image) I find astronomy interesting, so I thought I'd ...
9
votes
3answers
20k views

Copying PNG with transparency from browser shows a black background instead

When I copy a PNG image with transparency to the clipboard and subsequently paste it into Photoshop, Paint, etc. - the transparency turns to black. Is there any workaround for this? Is this a ...
9
votes
4answers
2k views

Linux software for creating HDR images? [closed]

Is there any good sofware available for linux for creating HDR images?
9
votes
2answers
4k views

Photoshop: HSL Color picker plugin?

Is there a plugin that can let Photoshop use a HSL color picker, rather than HSV (which Adobe calls HSB)? In other words, any/all of the following locations could have an HSL option: Or perhaps a ...