imageviewer | tiny flask app for viewing images with catalogs
kandi X-RAY | imageviewer Summary
kandi X-RAY | imageviewer Summary
Do you have a bunch of images with meta information that you would like to go through (or share)?. This is a web-based image viewer for that. It is a tiny flask app, built with bootstrap, which will display images and their meta information from a table with pagination. It could be a starting point for a more complex application. WARNING: This app was built to run locally for my own convenience and to be shared with a small number of collaborators. In app.py, the entire table is loaded into a global variable table. This can be problematic if the table is large, and the app receives a lot of traffic, as it will load the data for every process. You'll want to setup a proper database. See.
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QUESTION
I am using Pyqt5 to plot some medical images (numpy arrays) in three different widgets. Now, I want to plot a line over the image (displayed using pg.ImageViewer). Have someone already done this?
Thanks!
...ANSWER
Answered 2022-Mar-04 at 09:19You can access the viewbox of the pg.ImageView
widget using .getView()
. From there you can add any items to it that you like using viewbox.AddItem()
. Below is a modified version of the ImageView example which plots a line plot on the ImageView.
QUESTION
How can I send a URL from a template to a view? I have noticed that a normal string works but a URL doesn't. Here is what I have tried.
...ANSWER
Answered 2022-Feb-24 at 15:56You need to escape the image so that it can be used in a URL, use the built-in filter urlencode
QUESTION
ANSWER
Answered 2022-Feb-21 at 13:24Try to use data:form-data, and you can insert key with values into this FormData() obj then you can transmit it to your controller. If you want to know more about FormData() then read here
Below is a work demo,you can refer to it:
controller.cs:
QUESTION
I am at beginner level for using Jquery.
Problem : so the problem is that, I have to add "choose file" for each of the element's inside a tag. And display the image after selecting it inside the tag. But Has this is this list of elements using for each loop, it cannot different between the id property. please see the images and code for reference and help me out, Thank You !!!
...ANSWER
Answered 2022-Feb-19 at 09:29HTML id attribute should be unique. In your code, only the first element with id=productImage
is being replaced.
What you could do is use $(this).find(selector)
. This will find the element inside the current element.
In the code below, the current element is .uploadFile
and .find()
will search inside that element.
QUESTION
In my Sparetime I work on an Android App that send's Files over the Internet. I develop this App on my own, so I'm not too concerned with Playstore Guildlines regarding Privacy and so on.
What the App should do:
- user klicks Button to select File from Storage
- Android gives that File to my App -> Here is the Problem
- My App reads that File and send's it
The Problem: My App get's an "URI". I try to read the File from that URI using the ContentResolver. And Copy the File in the internal Storage of my App. But when I open this file with an ImageViewer it tells me, that this file is corrupt. A Hex-Editor also shows differences from the original File.
Permissions:
...ANSWER
Answered 2022-Feb-16 at 11:36May be because you have UTF8
encoded a binary file as text with the line
buf.write(byteArrayOutputStream.toString("UTF-8"));
Your addAttachment
method looks weird
try this instead
QUESTION
Hello I am tring to implement simple image widget with zoom to mouse position. I combined the example at Zooming in/out on a mouser point ? and https://doc.qt.io/qt-5/qtwidgets-widgets-imageviewer-example.html. However the image do not scale as expected and the scale bars do not update appropriately either. Here is my code:
...ANSWER
Answered 2022-Feb-14 at 20:41The main problem is that by default the pixmap is not resized when QLabel is resized, so setScaledContents(True)
must be used.
Note that the algorithm used for the zoom and translation doesn't work very well, as it doesn't consider the change in the range of the scroll bars correctly.
I propose an alternate version that actually zooms on the mouse similarly to what happens in common image viewers/editors and map viewers. The trick is to map the mouse position to the label, and get the delta based on the scaled position:
QUESTION
I am using PIL to make an application to open all images in a folder. I sought for tutorials for PIL. I tried to find tutorials with list of images, but I failed to do so. I found some, but I had to list the file location beforehand. It annoyed me. So, instead I want the user to choose a folder, and the application would load all the images for the user. But, while making the thumbnails for the list of images, I got an error which I'm not familiar with. This is the exact error:
...ANSWER
Answered 2022-Jan-13 at 13:18Just remove the reading part again which doesn't make sense
QUESTION
I am working on a DICOM viewer project that combines PET and CT.
Progress
Adjust the size of one of the two dicom files to the larger one.
And change the color of one dicom file
And merge the two dicom files
example dicom bitmap1
bitmap2 , newBitmap(change color Red)
The result image I am aiming for
...ANSWER
Answered 2021-Dec-13 at 10:07It is likely that the bitmap1
lacks alpha channel, so when drawing, it will overwrite everything. You might want to consider for example making newBitmap
completely red, and instead map the color channel to the alpha channel. I.e. newBitmap.SetPixel(i, j, Color.FromArgb((int)r, 1, 0, 0));
and switch the rendering order so that newBitmap
is drawn last.
Also, dont forget to dispose all the created bitmaps and graphics objects.
You might also consider creating a custom function for fusing the pixel data, i.e. take the 16-bit values from the left and right image and use some custom function to produce a color value, since this should allow for far greater flexibility in how to visualize the data. But for this to work you need to access the raw 16-bit pixel data, and probably to write your own resize function for said 16-bit data. This would typically also involve some kind of windowing function to map the 16-bit data to 8 bit values.
You might also need some kind of registration function to accurately combine each dataset, since there is usually no guarantee they will align correctly from just resizing.
You might also want to look at Fast work with bitmaps in order to get any kind of rendering speed.
QUESTION
I am testing a PyQt5 app using pytest and its pytest-qt addon.
I created a fixture to load my application class that I then use for all the test
I have two issues so far
- The gui shows up and I don't want.
- If I write more tests I will eventually get a segmentation fault as (I think) there are too many gui open.
any idea? the documentation of pytest-qt is pretty basic and actually has a test that shows the GUI
a minimanl example is:
...ANSWER
Answered 2021-Dec-08 at 05:59If you don't want to show the GUI then a possible solution is to use the Qt::WA_DontShowOnScreen
flag, for this you must do the following:
- Remove
imageViewer.show()
in main_GUI. - Add
imageViewer.setAttribute(Qt.WA_DontShowOnScreen, True)
andimageViewer.show()
in Viewer fixture.
QUESTION
I have a basic image viewer (mostly just trying to learn the quirks of QGraphicsView rather than labels) that I'm trying to allow some basic zoom and pan functionality. It loads a directory of images the user can click through, but fails to load the image. It will return the dimensions, but receives a float division by zero arrow when trying to set the scene. I have tried setting as a QImage, but it doesn't seem to make a difference.
actions_test.py
...ANSWER
Answered 2021-Nov-05 at 03:57The problem is you are constructing the ImageViewer with another QGraphicsView that you made in Qt Designer, "qgraphic_image", as its parent. This makes it a child widget inside of that parent graphics view, and it's effectively invisible as its viewport rect has no size (that is why you got a division by 0 error).
You can remove the "qgraphic_image" from your UI file, for now I just replaced it in the layout to try it:
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