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DGM


Last seen: Today 自 2015 起处于活动状态

Followers: 6   Following: 0

Hi, I'm nobody. I don't belong here, but I have nothing better to do. Matlab used to be part of my work. Now it's part of my hobbies. That's pretty sad, really.

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已回答
A problem in using imhist to display histogram of indexed image
This is a bug that's been part of imhist() for a very long time. When fed an integer-class indexed image, the colorbar will be ...

2 hours 前 | 0

已回答
Make only the highest values of grayscale image transparent
I'm going to assume that the goal is to combine two images of the same page geometry and then save the result. If the end goal ...

5 days 前 | 0

已回答
Matrix of fading colors
Loops aren't needed. % don't embed parameters into the code outsize = [256 256]; % [y x] % i'm assuming we live prior to R2...

10 days 前 | 0

已回答
Reading image into 16 bit signed int
There's no elegant and succinct way of doing this with base tools alone, considering that you'll potentially need to support mul...

10 days 前 | 0

已回答
how to convert a monochrome image of depth 24 bits into a monochrome image of depth 8 bits ?
Here's a more comprehensive example which should handle both unsigned and signed integers. Attached are two demo images. One i...

10 days 前 | 0

已回答
How can I save a 32 bit image (uint32) as a tiff?
Here's a simple demo that should demonstrate writing odd numeric classes to a TIFF. This supports 8,16, and 32 bit signed and u...

10 days 前 | 0

已回答
Normalizing by means of zero-mean
I'm going to stick this here and close the duplicate threads. What's missing from this form of the question is that the input i...

10 days 前 | 0

已回答
How to find a polygon in an image
This is largely assembled from existing examples. I'm sure we can find a way to break it, but this image is pretty forgiving. ...

11 days 前 | 0

已回答
Imfuse 'blend' issues
Like most cases, I don't see the point of using imfuse() here. If you're treating the images as if they're binarized, make sure...

11 days 前 | 0

已回答
Bluewhitered function in tiledlayout environment
Unlike other map generators, bluewhitered() depends on the caxis of the current axes. You need to generate the map after you se...

11 days 前 | 1

| 已接受

已回答
How can i change ppm image resolution when I using Imread?
Good gravy. I finally figured out what you're doing. You're writing your PPM files using 'maxvalue' set to 1023. This is wh...

11 days 前 | 2

| 已接受

已回答
error
We know the following: You get a warning that a specific user-created (or downloaded) filename is preventing the use of a built...

12 days 前 | 0

已回答
how to get the pixel value of histogram?
You have the bin values. You know which bins you want. Why are you zeroing the histogram counts instead of changing the image?...

12 days 前 | 0

已回答
Make an image darker with overlay of another image
If your images are in standard scale (i.e. correctly scaled for their class), then I don't see why you'd be using imagesc() to d...

12 days 前 | 0

已回答
Coor image enhancement in spatial domain
"Enhance" is shorthand for "read my mind and do whatever it is that I want but haven't spent enough thought to formally conceive...

12 days 前 | 0

已回答
Drag histogram to adjust contrast
You're asking for a graphical image adjustment tool while simultaneously asserting that you can't use the extant ones because yo...

12 days 前 | 0

已回答
Poor imshow image quality
The image is being drawn into a TiledLayout with the default wide padding and tile spacing. A ton of space is being wasted. ...

12 days 前 | 0

提问


How to report/flag a user or a ThingSpeak channel?
When I find spammers, I often tend to check their profile to see what else needs cleaned up. Occasionally there are accounts li...

13 days 前 | 1 个回答 | 0

1

个回答

已回答
finding 4 neighbor of pixel in grayscale image.
Disregarding edges, the 4-neighbors of a pixel IM(y,x) are obviously %IM(y,x+[-1 1]) % horizontally-adjacent pair %IM(y+[-1 1]...

13 days 前 | 0

| 已接受

已回答
Input is a valid integer
Assuming the input x is a char vector from input() which represents a numeric scalar: isvalidnumber('56') % positive scalar int...

16 days 前 | 0

已回答
Unequal, custom, non-evenly spaced colorbar intervals
It can be done, but it's annoying to do. A lot of people take shortcuts and represent nonuniform intervals with uniform colorba...

18 days 前 | 0

已回答
How can one use a variable to set color of a line plot , and use colorbar?
Here's a simpler way to do it using patch(). % the data as given load koordmean load anx % the coordinate data x = koor...

19 days 前 | 0

| 已接受

已回答
how to use drawcircle methods with centroids array from bwconncomp
You're repeatedly overwriting h before you do anything with it. It's not clear what you expect to happen. If you just want the...

20 days 前 | 0

| 已接受

已回答
how to plot the data over an image of graph to validate the data?
You can plot things over an image, but good luck guessing whether or not your image features actually line up with the coordinat...

22 days 前 | 1

| 已接受

已回答
why file did not appear
Maybe it has something to do with that big red error because you created an invalid file name.

23 days 前 | 1

已回答
how to get Integrated circuit pads in image?
This is not robust or applicable to other images or types of packages % read the image inpict = imread('https://www.mathworks....

23 days 前 | 0

已回答
extracting values from an image with color legend
% the image inpict = imread('https://www.mathworks.com/matlabcentral/answers/uploaded_files/1699336/image.png'); % extract...

26 days 前 | 0

已回答
Weird Imhist beahviour seen
I don't know where everyone is getting uint12-scale images, but I guess it's a thing. I posted an example which demonstrates th...

27 days 前 | 2

已回答
Problem with Imhist method
I saw this last night and threw together a demo when I was making the demos for the webdocs. The majority of the work here was ...

27 days 前 | 1

| 已接受

已回答
Why does imhist() do this?
We'll see what shakes on the bug report. I was already writing around imhist() in the MIMT tool, expecting to come back and m...

27 days 前 | 2

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