Questions tagged [image-processing]
The image-processing tag has no usage guidance.
168
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How do we search for files which contain a specific word and end in a specific file-type suffix?
How do we use Microsoft Windows PowerShell and Regular Expressions (Regex) in order to find all of the pictures (image files) on a computer such that the file name contains the word "dog".
...
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19
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How to composite images with offsets and scaling into a single image?
I would like to use imagemagick to create a mosaic.
I have a list of images along with their individual offsets and scales, for example:
a.jpg, translate to 0,0 and scale to 100%
b.jpg, translate to ...
- 1,591
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22
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Extracting foregrounds from DJVU files
I tried extracting the foreground using ddjvu -mode=foreground and ddjvu -mode=black but the file that was generated was several GB in size. Following one of the answers in rhis link I then tried to ...
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2
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61
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PDF Composed of Images of Text - How to Convert to text file?
I have a PDF composed of many scanned pages. An example snippet of the text is shown below (do not worry about privacy, as this is a publicly available document). As you can see, it is very difficult ...
- 101
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Fast Stone Image Viewer - Creating one image out of multiple images
I was wondering if there's a functionality within Fast Stone Image Viewer that allows you to "glue" several images together into a single image as sort of an image grid while keeping the ...
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4
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How to resize an animated webp？
I want to be able to change the size of a dynamic webp.
Sample picture. I found this website to do just that.
So how can I implement something similar in my own program?
I tried using ImageMagick7 or ...
- 103
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836
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avoid duplicate frames in ffmpeg
I have a video.mp4 which I need to convert losslessly into a sequence of images.
I used
ffmpeg -i input.mp4 $filename%05d.tiff
but I get a lot (thousands) of duplicated frames. What are they? is it ...
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394
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ffmpeg - How to create a video with a PNG file and keep the same colors
I use a PNG file to create a video.
I create the PNG file with Inkscape.
The SVG file in Inkscape, the PNG file opened in Chrome show the same colors.
Nevertheless the colors of the video (opened in ...
- 101
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1
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2k
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How can I fill / replace only %100 transparent pixels with a selected color in photoshop
There are countless examples to add background layer
That is not what I want because if you have semi transparent pixels that breaks their color
What I want to achieve is only replacing %100 ...
- 683
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384
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How do I properly downscale an image from 300 dpi down to 72 dpi using imagemagick?
As the title says, I want to know the proper way to downscale my image that is originally 300 dpi down to 72 dpi while still maintaining the same quality of the image.
By quality, I don't mean the ...
- 605
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39
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I don't know how to play this videos
This videos are from an IP camera but I don't know how or where I can play it. I tried with VLC using a demuxer for h.264 but it doesn't work.
I tried converting the videos to mp4 but it looks like ...
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30
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Can sips -g capture image data on Photoshop .psb files over 4.5 GB?
When using the command sips -g profile on a .psb over 4.5GB, it returns nil. The same is true for -g bitsPerSample and -g space, though -g dpiWidth is able to capture data.
All these commands work as ...
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2
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761
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How can I cut a collection of images in half on Windows 10?
I have 50 images. I need to cut each image in half (vertical cut). How can I do that on Windows 10 via a batch process (= not cutting each image manually one by one)? All the images are in a single ...
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Remove watermark from pdf of images [duplicate]
I have a pdf consiting of page scans and they have they have an annoying watermark that appears as a grey image in the middle of pages difficulting reading. Since the pdf is made of image files there ...
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731
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Any way to save WebP images in Microsoft Office (Word, PowerPoint) without recompression (de-compression)?
Recently Office has added the ability to read WebP images, and to integrate them into Office documents as pictures.
The WebP format has many advantages, specifically it allows massively smaller file ...
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259
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Extracting text from animated GIF file
I have a GIF file that shows a scrolling down through a table. That table has data that I need to extract. Here is how the file looks like,
BTW, I have video files that show the same. With extensions ...
- 181
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237
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Bulk convert SVG to EMF
I have several SVG images which I want to bulk convert to EMF (and possibly WMF also) format. Here is one of the images.
I tried all online tools in first page of google search "svg to emf", ...
- 251
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2
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449
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How to bulk replace images with placeholders of same dimensions, with a unique visual identifier?
Context
I have a few private GitHub repositories of games I have made. I want to open source the codebases, but many of the images used are licensed so cannot be shared freely.
Since the image ...
- 121
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1
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302
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Overlay GIF on MP4 at certain time interval (while maintaining GIF transparency) [FFMPEG]
I'm looking for a way to implement a gif overlay on top of an mp4, having the following characteristics:
Maintaining GIF transparency on video
Having the GIF only showing up for a certain time ...
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1
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475
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Drawing text on a gif while preserving transparency [FFMPEG]
Using the regular method, input > drawtext seems to remove transparency for GIFs and messes with the coloring
ffmpeg -i test.gif drawtext=text='Test':fontcolor=red:fontsize=24 output.gif
I've ...
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SOLVED | Images are rendering broken [duplicate]
I got a new computer for Christmas. I love it! But then I went on scratch and saw that the blocks were rendering broken. Later I wanted to log in to WhatsApp web and the QR code was broken. It's ...
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469
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How does one embed license (or other) information into a PNG file?
I want to preface this by saying no, I don't mean steganography. What I'm looking for isn't simply putting text etc. into an image file through things like Outguess or OpenStego.
A software company ...
- 174
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5k
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How to know details of an HEIC file?
An HEIC file was sent to me via email. Is it possible to know when that particular HEIC file is created by the original user?
- 111
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51
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Can you identify this image type?
I have a MS SQL Server table with images stored in a large object. I know the BLOB contains image data, but I don't know what type all the images are. There are two different types identified by a ...
- 101
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201
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Export multiple non-adjacent tiles with GIMP or ImageMagik or other tools
Tl;dr: looking for a tool or script that can export disjoint cookie-cutter squares from a larger image.
Imagine that you want a set of tiles on your kitchen wall that make up a larger image. To be ...
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1k
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How to batch convert PNGs to JPEGs and preserve timestamps in filesystem & EXIF header?
I sometimes take screenshots on my Mac during video-calls with friends/family (with their consent of course!) and would like to add those images of a photographic nature to my Apple Photos Library. I ...
- 359
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28
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Overlay image on FFMPEG running on and on
I wanted to overlay images on my video but no impact to any audio. My video is of length 01:32:34 and my below script continue running from 3 hrs and then I closed it. Looks some issue. Please can you ...
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572
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Convert table image to Excel, using Excel
I have the table below in the image png file format.
Would it be possible to convert this to an Excel table using Excel?
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321
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Need help processing opened images in ImageJ
I've created a macro (based on different ones I've seen) that analyses particles areas in my picture, automatically copies the Area column in the results window to my clipboard and displays a window ...
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37
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How to pre-process the background of this image in order to OCR the table properly?
I have to OCR the book of tables consisting of 500+ pages but the maker stamped every page. Can anybody help me on how should I process it in order to be able to recognize it let's say in FineReader? ...
- 127
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48
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Cropping sections of an image and composing it into one image
Suppose I have the following image with three equally-sized rectangles, but different letters
And I would like to combine them so that there is only one rectangle with all three rectangles layered on ...
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2
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228
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What causes these patchwork lines in the resulting image from my scanner?
I'm trying to scan some old trading cards (AD&D Trading Cards from 1991) and I'm having trouble getting a good scan result on a flat bed scanner.
The issue I'm having is the resulting image ...
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How do I edit this texconv "IMGtoBC3.bat" file so it "READS FROM & PRESERVES the directory structure when writing the "resulting" dds files
How do I edit this texconv "IMGtoBC3.bat" file so it "READS FROM & PRESERVES the directory structure when writing the "resulting" dds files?
Personally, I have a large ...
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How to measure length (in pixels) between multiple points on an image [closed]
I have a fairly high resolution map, with a known scale. How to measure the length in pixels between multiple points on an image? Straight line is simple, but how to do it when there are multiple ...
- 111
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1
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52
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Dual monitor wallpaper issue
I have two identical Samsung monitors with resolutions set to 1920x1080. I am attempting to use a PC of 3840x1080 and span across the two. Unfortunately, regardless of the image I use I get the shear ...
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1
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2k
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Gimp: opening clipboard as new image, with correct pixel size / dimensions?
I often find myself having a picture in my clipboard, and then I want to quickly edit that in Gimp.
So I ⌘+Tab to Gimp (using the latest Gimp on macOS Catalina) and do ⌘+N for New Image.
Problem: it ...
- 1,052
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1
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132
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How can I make a floating block element occupy an entire page in Microsoft Word?
I'm trying to have a picture occupy an entire page in Microsoft Word while the text flows around it, i.e. the paragraph would continue from the page before the picture directly to the page after the ...
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Can I add Png Image as an option to Create New Object Type in Excel 365?
I want to insert several pictures as Objects in Excel 365. These pictures are scans of construction plans that serve as references to some calculations in the file. File readers need to be able to ...
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55
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Given a printing of a monochrome bitmap image, how can I recover the bitmap?
I have a printout (scan, really) of what was originally a monochrome bitmap image. The pixels are clear enough that I can manually doodle in a reproduction of it in Paint or Gimp or some other image ...
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756
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Feather edge of image in with ImageMagick in 1 step (existing solution in 3 steps)
I am trying to add a feathered edge to a JPG such that it fades to black at the edge of the image. I was able to achieve this in three steps, but have been struggling to combine it into one step.
...
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Why are screen recordings on MacOS unable to be played once copy/pasted to a usb drive?
If I take a screen recording in MacOS, (seemingly regardless of file size) and copy/paste it into a usb drive, then try to play the .mov file from the usb (on a Mac)I get the error:
The document <...
Jim
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363
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Vector image - convert JPG to EPS or build EPS from scratch
My friend sent a .jpg logo to some company and they responded that they do not accept that format and they needed it to be vector version and can't use .jpg.
I wonder if converting .jpg to .eps would ...
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3k
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Change letters from black to white on image
I have an image of a logo (format *.jpg but can use others if necessary), which has black letters on a white background, like this:
I would like to change the letters from back to white, while still ...
- 195
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409
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Bulk convert image-data URIs to images
I have a text file of 391 image-data URIs, one on each line. I need to batch-convert them all to images, named according to their sequence (i.e. image001.png, image002.png or similar).
What do people ...
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How to save image file, using "xfce4-screenshooter -r -c" command?
I using xfce4-screenshooter -r -c command for make a screenshot.
xfce4-screenshooter --help says:
-c, --clipboard Copy the screenshot to the clipboard
-r, --region Select a region to be captured by ...
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GIMP/Imagemagick: Breaking single images into multiple images
I have pulled the image files from this Gregg Shorthand resource site with the intent of using the shorthand figures in Anki flashcards to complement my study of the system. You will note that the ...
- 221
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2k
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Convert PowerPoint Slides into Single Infographics
Infographics are graphic visual representations of information, data, or knowledge intended to present information quickly and clearly.
I have PowerPoint presentation with about 8-10 slides, this ...
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1
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736
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Use find to delete all images under given dimensions
I just used Recuva and Photorec to recover some data off an accidentally-formatted drive. Naturally, the result is every intact file that ever existed on the drive during its lifetime. This means tens ...
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268
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How to stitch 3 JPEG files horizontally to generate a big image that represent a 2 pages big crossed words? [closed]
I have scanned a big crossed words (2 pages in a tv magazine) using my personal scanner.
I have now 3 PNG files that I want to combine to generate the original crossed words.
After having scanning ...
- 247
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"Canonicalize" PNG files
I am looking for a way to process a set of PNG files in such a way that if they contain the same image data, the files will be byte-by-byte identical too.
Is there a quick and easy, automatable way ...
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