462 questions
1
vote
0
answers
52
views
Scaling and Centering an Image using Graphics.Transforms
I am trying to load an image onto a usercontrol Graphics Surface. I have no problem doing this. However, the result is never as expected. The image should scale to reach the border with the longest ...
- 11
0
votes
0
answers
73
views
2D PNG images analysis using textureFeatures/Matlab Medical Imaging Toolbox
I am trying to get the GLCM Properties from an image using Matlab Medical Imaging Toolbox. I know how to do it with the graycoprops but as the Medical Imaging Toolbox allows also to examine GLRLM, ...
- 313
0
votes
1
answer
63
views
I Made A Script To Search For An Image On The Screen The Problem is It Takes Too Long
public bool FindImageOnScreen(Bitmap searchFor, Bitmap searchIn)
{
for (int x = 0; x < searchIn.Width; x++)
{
for (int y = 0; y < searchIn.Width; y++)
{
Log($&...
0
votes
1
answer
60
views
Image not found error when multiplying images in macro code
I'm pretty new to ImageJ, and coding in general. I'm trying to make a macro that will duplicate the current open image, threshold the duplicate to get the pixels with fluorescence, make the pixel ...
0
votes
0
answers
46
views
Computer Configuration does not apply after creating a new Windows image
I am going through the process of making a new Windows 10 Pro image for imaging our workstations. The sysprep process goes fine, but after installing the image on our devices it will not pull the ...
- 3
0
votes
0
answers
51
views
Why can't I make a vhd that can open in 7zip?
I am trying to create an image for diskless boot using Win 10.
When I finished setting up a client PC (with Win 10), I tried to image it using 1) DD for Windows and 2) Disk2Vhd, now for some reason, ...
0
votes
0
answers
65
views
C++ in Qt6 - Off-centered QPixmap while simulating video playback
Background
I'm attempting to implement a platform-agnostic, timer-dependent "slide show" application in C++ for Qt v6.6. Currently, QPixmap instances are generated from raster files read ...
- 182
0
votes
0
answers
48
views
problem with GSAFT (backprojection) algorithm for nearfield image reconstruction on my simple planar array
I have a planar array containing 16 transmitters and 88 receivers located on the same plane with dimension 30cm-by-30cm. I have an object of size 6cm-by-6cm. Object and antenna array plane are in ...
- 352
0
votes
0
answers
43
views
How to reconstruct MMW image using electrical field in each direction at Reciever points
I have used a structure including 109 Receivers and 4 transmitters in order to do MMW imaging(multistatic imaging). Imaging was done in 3 different frequencies. So, now I have electrical field in each ...
- 352
0
votes
0
answers
179
views
Reduce noise by averaging images coming from x-ray camera (16 bit grayscale)
I am getting 16 bit grayscale images from a camera. I want to reduce the noise of these images by averaging the images (by factor of 2, 4 etc).
I have the pixel data in a byte array. I have tried to ...
1
vote
1
answer
233
views
Medical Imaging with python
I have an image in DICOM format, this image is composed of a set of RAW files (a specific case 122, which would be the number of slices that the image would have, depth in Z). The size of the image is ...
- 11
0
votes
0
answers
111
views
Extract black and white raw image in PDF to jpg and tiff
I have a task to extract black and white (1 bpc) image from PDF to jpg and tiff using .Net.
But I got an exception when creating a bitmap from the memory steam.
The below is parts of my code
...
- 1
1
vote
1
answer
153
views
How to do pixel super-resolution?
I am currently exploring pixel super-resolution algorithms and am unsure where to begin, so I have attempted to replicate the work of others. The paper I am trying to replicate is titled "High-...
- 11
0
votes
1
answer
863
views
How to use FTK Imager 4.7.1 under Windows PE on an USB-Stick
I am an ongoing computer forensic student and I am working on taking an image on a bitlocker encrypted Windows 10 device.
Therefore I am creating a Version of Windows PE and mount it with FTK Imager 4....
-2
votes
2
answers
77
views
Sorting a large amount of data into separate sets
I'm extracting up to 2500 frame files per experiment (not always the same amount), and my process at the moment is to manually divide the total number of frames by three to separate into three subset ...
0
votes
1
answer
517
views
Any Alternative to ImageIO.write to convert bufferedimage to GIF bytes (Faster than ImageIO)?
my problem is when using imageio.write i am seeing that is using hdd, also read about jDeli (but too expensive), Apache Commons, JAI that are much faster....
I wanna use the encoded bytes returned by ...
0
votes
0
answers
24
views
scale intensity of MP4 to counts originally collected by the camera
I have data that I saved as mp4 files and contain intensity for a fluorescent signal, however because they were exported in mp4 format the intensity shown in the image is less than in the original ...
- 1
0
votes
1
answer
503
views
GDAL read several pictures from wmts server using same opened connection
I use C++ code to read pictures from WMTS server using DGAL.
First I initialize GDAL once:
...
OGRRegisterAll();
etc.
But new connection is opened every time I want to read new image (different urls):...
0
votes
1
answer
257
views
Window width and Center and Hounsfield units [closed]
I am currently adjusting the brightness and contrast of a grayscale image using fo-dicom.
Loading the image:
_dicomFile = DicomFile.Open(GetImageFileName());
_dicomImage = new DicomImage(...
0
votes
1
answer
78
views
Imaging to Bigger SSD
I'm planning to image a laptop using Acronis or maybe Clonezilla from a 256GB 2.5" SSD to an NVMe 512GB.
The laptop is assigned to just one person but they have quite a few pieces of proprietary ...
- 3
0
votes
1
answer
313
views
How to extract an image area and plug it back in the original image?
I am working with 3D images(300) of size (128x128x128). I want to extract the image area (remove the background), do some transformation, and plug the transformed part back on the original image. How ...
- 151
1
vote
0
answers
104
views
improve performance of non local mean NLM openGL kernel
I wrote a 3D non local mean denoising function using openGL compute shaders in a windows form application via openTK, this function performs a denoising on float grayscale volumetric images (voxel), ...
0
votes
0
answers
81
views
Is there a way to map a low resolution false color imaging to a high resolution photographic image?
I have a very high resolution photographic image with some objects in it, along with a false color scan of it, but at a lower resolution. I know that I can upscale the scan image as it is, but is ...
- 74
-1
votes
2
answers
188
views
Is there a way in python to stack arrays of pixels of same size (such as a z-stack)?
I just want to sort of clarify for example could I somehow stack a few 2D arrays into an image?
array1=[[0,0,0,0,0]
[0,7.6,7,7.2,0]
[0,7.6,7,0,0]
[0,0,0,0,0]]
array2=[[0,0,0,0,...
- 37
0
votes
0
answers
209
views
how to cluster and then add the colors for clustering in thermal images
I want to cluster the image according so that i get the high temperature regions( white, red and yellow) and then instead of viewing those individually, I would like to view all the three color ...
- 1
1
vote
2
answers
690
views
Getting "Images Do Not Occupy Same Physical Space" Error When Trying to Multiply two .nii Files in Convert3d/ITK
I have to mask a .nii MRI image for an internship I'm doing. The method I'm using involves multiplying the proton density weighted version of the image (captured during the inversion pulse) by the ...
- 43
0
votes
2
answers
37
views
can I represent the result of a counter with matplolib?
Hello everyone i wanr to represent the following result of a counter:
Counter({'U.S.': 852, 'U.S.S.R/Russia': 273, 'Japan': 20, 'France': 18, 'Canada': 18, 'Germany': 16, 'China': 14, 'Italy': 13, 'U....
0
votes
0
answers
64
views
How to generate fields of views to image a list of points in the sample?
I start with a grid of evenly spaced XY coordinates, with the distance between them determined by the field of view of the imaging system.
The red dots are the XY coordinates, and the scan area looks ...
- 219
2
votes
1
answer
210
views
How to fit two images into one image
I am working on a project to fuse two DICOM Image by myself.
Image 1 (168x168)
When the images of Image 2 (512x512) are combined, the two images do not match at all.
I don't think there's a problem ...
- 125
1
vote
1
answer
1k
views
How to implement Custom cropping using golang
Am looking to do custom cropping on a set of images, Instead of cropping normally, using height and width i want the flexibility of getting an output image that is cropped like a polygon or an hexagon ...
- 429
2
votes
1
answer
1k
views
Dicom deformable image registration
I have dicom files for two CT scans and deformable registration between them. I would like to ask how I can deform one CT scan based on the deformable registration file:
so far, I managed to extract ...
- 21
0
votes
1
answer
114
views
Is it a false security alert?
I'm getting this alert:
Microsoft Kodak Imaging small offset malformed tiff-small endian
I scanned the affected system with an antivirus: no infection found. Is this a false IPS alert ?
1
vote
2
answers
2k
views
Hidden metadata in TIFF files
I'm using a proprietary software to record and export microscope images as TIFF files. When I load the TIFF files in the imaging software, I have access to all imaging settings at the time of ...
- 120
1
vote
0
answers
903
views
How to compute reflectance from an image given a wavelength (python)
I have recently come across a paper entitled, "Portable Multispectral Imaging System Based on Raspberry Pi".
In this work, the authors have presented a low-cost spectral imaging system using ...
1
vote
0
answers
244
views
Calculate length of an object comprised of pixels in all 8-neighbor-dimensions
I have an array with 1s and 0s where the 0s represent background and 1s information that came originally from an image. I first find out which 1s belong together (thus are direct neighbors along their ...
- 99
-1
votes
1
answer
465
views
How resizing a 3D image works, intuitively
I know how resizing works in 2D images but I am having issues understanding how it works in 3D images. As I think a 3D image is made by stacking multiple 2D images in the z dimension. What happens in ...
- 2,919
1
vote
1
answer
908
views
adding an overlay on a DICOM image using open CV
I am trying to create a layer on a DICOM image, below code works fine for jpg/png images but not for DICOM.
import cv2
import numpy as np
import pydicom as dicom
ds=dicom.dcmread('D0009.dcm')
img=ds....
0
votes
1
answer
1k
views
Creating a grayscale image in a python byte array
I need to pass a grayscale image as binary array to a DLL in python. I am using PIL to load the original image, converting it to a grayscale, and they copying the pixels to the c_char array. My code ...
- 1
1
vote
1
answer
182
views
How to use GDCM to write voxel data, slice by slice?
In all the examples I've seen for GDCM on how to write image data, they always consider the image volume as a single whole, cohesive buffer. The basic structure is along the lines
#include "...
- 162k
0
votes
1
answer
59
views
Repeat function for Tiff file needed TILE function
I want to read image file (6477 X 6840) pixels and copy it 2 time in Y and 8 times in X.
I have tried so many procedures but time consumption is too high.
public static void FillPattern(Graphics g, ...
1
vote
1
answer
493
views
Plotting Ellipsoid in Python
I have a 3x3 positive definite matrix (a diffusion tensor to be specific) and am hoping to plot an ellipsoid who's axis directions correspond to the eigenvalues of the tensor with scale proportional ...
- 11
2
votes
0
answers
498
views
How do I determine the displacement between two matrices using a two-dimensional cross-correlation function (xcorr2) in matlab
Im very new to matlab and medical imaging in general. For a project I need to finish a script that uses two matrices the "kernel" and "searchArea" to determine the displacement of ...
- 353
0
votes
2
answers
196
views
dimensions of image read using tfio.image.decode_dicom_image
I read a .dcm image from my own dataset using tfio.image.decode_dicom_image following this link. The shape of the read image is shown as (None,None,None,None). While displaying the image using plt....
- 376
10
votes
1
answer
286
views
WICConvertBitmapSource BGR to Gray unexpected pixel format conversion
I am using WICConvertBitmapSource function to convert pixel format from BGR to Gray and I'm getting unexpected pixel values.
...
pIDecoder->GetFrame( 0, &pIDecoderFrame );
pIDecoderFrame->...
- 359
0
votes
0
answers
710
views
Finding a object within a picture and returning its location in VB.NET
I'm trying to accomplish a task of finding a specific object inside a PictureBox in VB.NET and returning the object's location within the PictureBox.
I have the image containing the object inside a ...
- 1
1
vote
1
answer
1k
views
How to maintain Direction in SimpleITK image to numpy array conversion?
I have three different isotropic MRI DICOM volumes of the same object, each with a different direction (orthogonal sagittal, coronal and transverse acquisitions of same object).
I would like to ...
- 21
1
vote
2
answers
3k
views
Drawing a geometry onto a Bitmap (Avalonia)
My question is pretty straight forward: Is it possible to draw a Avalonia.Media.Geometry onto a Avalonia.Media.Bitmap so that I can save the resulting Image to a Steam as well as use the whole thing ...
- 1,420
0
votes
3
answers
2k
views
SimpleITK - Coronal/sagittal views problems with size
I'm trying to extract the all three views (Axial, Sagittal and Coronal) from a CTA in DICOM format, using the SimpleItk library.
I can correctly read the series from a given directory:
...
...
- 89
0
votes
1
answer
532
views
vtkplotter - How to set a colormap
I'm working with labeled DICOMs, and I'm using vtkplotter to visualize the 3D model. Each voxel has a label that identifies the recognized part of bone, ranging from -1024 to a value that varies ...
- 327
0
votes
1
answer
2k
views
How do I display all 8-bits image on python
first of all, sorry for my bad english, im a spanish speaker so Im gonna try my best to explain my problem.
I have a normalized ([0-255]) dicom image, and I want to display 8 images, but changing the ...
- 1