Could you please help me translate below command to Magick++ equivalent code?
convert -size 720x480 -depth 16 uyvy:frame.raw frame.png
You would need to allocated the Magick::Image class, set properties, and then read the image file.
Magick::Image img;
img.size(Magick::Geometry(720, 480));
img.depth(16);
img.read("uyvy:frame.raw");
img.write("frame.png");
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I want to get the raw binary data of an image but I don't know how to do that. Is any module available there to do that? I need some help. If anyone knows the solution to this help me.
The easiest way is probably just with ImageMagick in your Terminal. Say you have a JPEG and want the RGB pixel values in binary without headers or anything:
magick INPUT.JPG -depth 8 RGB:output.bin
Or you have a PNG and want RGBA data:
magick INPUT.PNG -depth 8 RGBA:output.bin
I'm trying to convrt RAW image to PNG with Imagemagick.
Imagemagick version I'm using is 6.7.8-9.
The RAW image want to convert is:
https://drive.google.com/file/d/1V1c-ytjkLaCM3KbAc6Yxj2nfWzNkYohc/view?usp=sharing
My client gave me a big RAW image which contains more than 1000 RAW images and it is generated from Dicom. Firstly, I cropped just one image with the command (crop command did not work somehow, so used convert):
convert -size 512x512 -depth 16 UYVY:original.raw result.raw
result.raw appears good on ImageJ.
Now, I have no idea how to get PNG from it.
I tested some commands:
This one generated a very bad quality:
convert -size 512x512 -depth 16 gray:result.raw result.png
This one gets green-ish image:
convert -size 512x512 -depth 16 uyvy:result.raw result.png
If I open result.raw on ImageJ and save as PNG, it works perfectly.
I got an answer from Imagemagick community. Firstly, below code to get the first image from the original raw was wrong.
convert -size 512x512 -depth 16 UYVY:original.raw result.raw
This is the correct way (512*512*2bytes=524228)
head --bytes 524288 original.raw >firstimage.raw
Then convert to PNG:
magick -size 512x512 -depth 16 gray:firstimage.raw -evaluate AddModulus 50% -auto-level x.png
Here is another way in ImageMagick that I think is more intuitive to your signed raw data. I simply specify the data is signed using -define quantum-format=signed. Then stretch the result to full dynamic range using -auto-level.
convert -size 512x512 -depth 16 -define quantum:format=signed gray:original.raw -auto-level result.png
If using ImageMagick 7, then replace convert with magick.
I've tried using image magic but it converts the image into a compressed format and most of the online conversion tools are also doing the same thing.
Is there some way i could achieve this in image magic or anywhere else?
Use the ImageMagick "-compress none" option to prevent compression, and use "-define bmp:format=bmp4" to force BMP4.0:
convert in.jpg -define bmp:format=bmp4 -compress none out.bmp
You can omit defining the bmp4 format because that's the currently the default BMP output format for ImageMagick anyhow.
Add "-alpha on" if you need RGBA instead of RGB pixels.
See the ImageMagick documentation for the -compress and -define options.
Is there anyway to process an image like this with ImageMagick so that I can use tesseract-ocr to convert it to text?
Because of the lines in the background I get nonsense from conventional methods. Does anyone know how to deal with an image such as this?
'convert -density 300 -units PixelsPerInch -type Grayscale +compress input.png input.tif' followed by 'tesseract input.tif output -l eng' gives me utter garbage.
Or are there any alternatives to ImageMagick that I can use to pre-process such an image whether through command-line or in python?
Have you tried morphology operations Morphology of Shapes after converting image to grayscale?
I have the following GIF image file:
I want to extract its frames (using PGM output format) using this imagemagick command:
convert brocoli.gif out%05d.pgm
But each frame has a different size.
How can I extract its frames while preserving the original gif file size?
Use the -coalesce option:
convert -coalesce brocoli.gif out%05d.pgm
You can use graphicsmagick:
gm convert Test.gif +adjoin Test_image%3d.png
or
gm convert Test.gif -coalesce +adjoin Test_image%3d.png.