There has been a lot of research on image searching and similarity measures. It’s not an easy problem. In general, a single int won’t be enough to determine if images are very similar. You’ll have a high false-positive rate. However, since there has been a lot of research done, you might take a look at … Read more
I felt like coding it up in C++ for you rather than using the command line like for my other answer, so I have put it as a different answer. On top, it also actually implements the Douglas-Peucker algorithm and, for fun and good measure, animates it. //////////////////////////////////////////////////////////////////////////////// // main.cpp // Mark Setchell // To … Read more
The drawImage() method can draw to a canvas using another canvas instead of an image. You could create a ‘backup’ canvas, of the same size as your original, draw the first one to there and then draw that one back to the original when you need it. e.g. // Assume we have a main canvas … Read more
The idea: As per your comment, it should feel like Google Maps and thus while dragging the image, the image should stick to the mouse pointer; no special effects required so far. But at releasing the mouse button, the image needs to move (the scroll box needs to pan) further in the same direction and … Read more
You can redirect the user to the following link where [PID] stands for the id of the desired picture: http://www.facebook.com/photo.php?fbid=[PID]&makeprofile=1 On this page the user will see the picture and immediately be prompted with a dialog if he wants to set it as his profile picture.
There is a standard problem in vision called text detection in images. it is quite different to OCR. OCR concerms itself with what it says, while text detection is about determining if there is text in the image. Adi Shavit’s third link is a method to address this problem. You can look on google scholar … Read more
The problem is that eps does not support transparencies natively. There are few options: rasterize the image and embed in a eps file (like @Molly suggests) or exporting to pdf and converting with some external tool (like gs) (which usually relies as well on rasterization) ‘mimic’ transparency, giving a colour that looks like the transparent … Read more
Use transform-origin and transform-box $(“.example”).on(“click”, function(e){ $(e.target).toggleClass(“reverse”); }) .reverse{ transform: scaleX(-1); transform-origin: center; transform-box: fill-box; } <script src=”https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js”></script> <div style=”width: 700px;height: 700px;margin-left: 100px”> <svg viewBox=”-200 0 700 700″> <image class=”example” href=”https://i.pinimg.com/originals/6f/3d/6a/6f3d6aab605e25af947d804c4a2cb558.jpg” width=”150px” height=”150px” x=”50″, y=”50″/> <image class=”example” href=”https://i.pinimg.com/originals/6f/3d/6a/6f3d6aab605e25af947d804c4a2cb558.jpg” width=”150px” height=”100px” x=”100″, y=”0″/> <!–x value can be changed during time–> </svg> </div>
Using ffmpeg 4.0, released Apr 20 2018 or newer, ffmpeg -i video.mp4 -i image.png -map 1 -map 0 -c copy -disposition:0 attached_pic out.mp4
You can use one commandline with two commands (gs, convert) connected through a pipe, if the first command can write its output to stdout, and if the second one can read its input from stdin. Luckily, gs can write to stdout (… -o %stdout …). Luckily, convert can read from stdin (convert -background transparent – … Read more