Photos from cameras contain a thumbnail and the photo itself. The thumbnail is created and used by the cameras to browse quickly without loading the full image.
I would like to mimic such behavior with C and Gtk+ 2.
Tools such as exiftool or dcraw can extract the thumbnail into a new file. However, I would like to load the thumbnail directly into a GdkPixbuf instead.
If there any function to extract the thumbnail already existing in photo and load it into GdkPixbuf?
There are many ways but not an official™ one.
If you do not want to lose yourself in the EXIF details you can leverage eog (Eye of GNOME): under the wood it is mainly a C library.
Link your app to that library and call eog_thumbnail_load on your EogImage object.
No
The loading of images is via pixbuf loaders so if you have a nef or cr2, you have to provide a loader to handle these types of files
The way I have implemented this is to build my own pixbuf loader and use exiv2 to obtain the embedded preview image (a tif or jpg) and then let the standard pixbuf loaders load that
Related
I am working on a react project in which we generate new images by fitting uploaded image in a tv screen, or laptop screen or mobile screen. So what I want is a way in which I can place the uploaded image into this below image
In the black tv screen I want the uploaded image to fit and below there will be download option to download the uploaded image.
I searched for that and came across cloudinary react library. So I wrote this code to somehow fit an image inside this image but I can't seem to find any way to download that image.
If you have any idea of doing this please share with me.
Thank You in advance
You can overlay images on other images without having to use a particular Cloudinary SDK, as outlined here: https://cloudinary.com/documentation/image_transformations#adding_image_overlays
You can then place them more specifically using x and y coordinates in the URL as outlined here: https://cloudinary.com/documentation/image_transformations#placing_overlays
Once you have generated an image with the overlay positioned correctly (and with any other transformations you may wish to process), you can download the generated image as normal.
I have to develop an app with complex pdf layout and many images, i used the base64 image cause i cant using url or file:///.../my-image.jpg to load the image, but it make my app cant generate pdf, so what kind i can use to make generate my pdf more lighter or how to load image without using base64 image ? Hopefully can help for this
Right now I'm working on a movie browser app which displays images of the acting cast. The images themselves are loaded from an external source via a URL link. I'm wondering how I can pass those images through a face detector, and display the cropped face within an img tag?
The image tag itself requests a src, but I intend to use the image after it has been passed through the face detector, meaning it won't be coming from an external source. I don't think I can pass an image matrix into img directly, so how could I store the image within my React app so it can be passed into img?
This app will be deployed on GitHub Pages or Netlify for public viewing, so I won't be able to modify the source files presumably. I'm assuming a server will come into play but how?
I want to display each page in a PDF document as a thumbnail in an WPF list view as images
Any ideas?
You need a library that can render the PDF files into images for you.
If you can afford a commercial library, take a look at Amyuni PDF Creator .Net, the method IacDocument.ExportToJPeg_Method in particular will do what you need (usual disclaimer applies).
Just for the record, iTextSharp and PDFSharp will not be able to help you on this task, unless your PDF files are composed by raster images only.
Using the 3rd party tapestry-upload component, I can upload a File from the client on the server.
Using the chenillekit's thumbnail component, a can make a thumbnail from an Asset.
How can I convert my File into an Asset in order for the Thumbnail component to provide me the image thumbnail ?
There are a few threads on the mailing list that deal with this. Basically, you need to contribute a custom AssetFactory that reads the image from disk (or the database). You might also look at URIAssetFactory which is part of ChenilleKit itself.
Here are a few links to help:
https://issues.apache.org/jira/browse/TAP5-423
http://www.mail-archive.com/users#tapestry.apache.org/msg33692.html