Need help/assistance. Trying to perform this in colab. I have a script that creates deepdream outputs as PNG files but want to take those files and apply an 'infinite ouroboros' recursive effect and output as a GIF, is this possible from a single static high resolution PNG image?
Related
I'm using PIL to convert images to icons
From PIL import Image
img = Image.open(logo.png)
img.save('logo.ico')
it works by creating the logo.ico file, but then it always shows the first image i converted from, if i change the logo.png to another image, it doesn't change the logo.ico from the first image..
also when i convert to .ico the image gets streched weirdly even when i specify the dimentions
those two problems don't happen if i'm converting to other image formats, like from png to jpg for example.
Edit: managed to solve the first problem by creating new.ico files every time using random names for each new one.
Can a PNG file's data be loaded in a certain order, say beginning with one RGBA channel, then the rest?
Perhaps similar to how JPG files can, sometimes using custom codecs, store their data as "scans" or "slices", that are loaded progressively, sequentially or interleaved, at first displaying black and white, followed by red, green, and finally blue.
It seems very unlikely, but can PNG files have a way of behaving like this?
References:
https://cloudinary.com/blog/progressive_jpegs_and_green_martians
Besides standard/progressive, the 3rd kind of JPEG compression: load by channel?
https://graphicdesign.stackexchange.com/a/55570/97317
PNG's equivalent to JPEG's progressive display is interlacing. Rather than interlacing lines, it interlaces pixels using a pattern the PNG standard calls ADAM7.
I use imread function to read one jpeg file and save the rgb image in bmp format. Comparing the two files, I found artifacts appear and use green circle to denote artifacts. The version of OpenCV is 3.0. I compile the libraries by myself with SSE, SSE2 and SSE3 switchd on (default setting). My OS is windows 7 professional. You can use the following image to check.
original jpeg image
saved bmp file
If I read the jpeg file in Matlab, the rgb image is correct. I save rgb image in png format in Matlab, read the png file using opencv and save the loaded image in bmp file. Everything is OK. It seems that there is a problem with jpeg decoder. The jpeg library used is libjpeg.lib.
Due to the size limit, I cut the patch from the second image.
You're always going to get some artifacts in JPEG. You can reduce the appearance of such artifacts by changing the quantization tables used (usually with loss of compression).
JPEG encoders often use a "quality" setting to change the quantization tables.
I have to convert image sequences to a video using 'matlab R2010a' version. What function should I use to load images to a video? In 'Matlab R2013a' version, 'writeVideo' is used. What is the related function of 'writeVideo' in 'R2010a' version?
If your images are created by some Matlab code, then you can always save them as image files (check out the print function), and use some utility (like VirtualDub) to convert the image files to video.
If it is enough to play the image sequence without saving it, then use the movie function.
On this website, one can create stitch charts from images. I'm trying to do this in MATLAB. I have implemented everything using the Image Processing Toolbox (Reducing of number of the colors, mapping to the color space of available yarn colors). I'm done with all of this, the only thing I still need to do is to create an output similar to these files from MATLAB, which basically show which yarn to use for each raster point of the stitch chart:
BW
Color
My question is how to print a table with a lot of very small fields with the color and/or symbol inside.
It should look somehow like in these PDF files. How can I print out a table like this? Directly from MATLAB? Can I create a PDF file like this in MATLAB? Should I export it to Excel somehow?
For the "color" PDF you linked, this looks just like a pixelated image. Why don't you save each "field" as one pixel, for example in a TIF file using imwrite(I, 'filename')? You could then print this TIF into a PDF using an appropriate scaling factor to make the pixels large enough.
For the "BW" PDF which basically contains a large table of symbols, it would probably be easiest to go through HTML or RTF file format to get the table of symbols, and then use some html2pdf or rtf2pdf converter...