Recent questions tagged image

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image - Python Imaging Library fails to grab whole screen

I am using PIL to grab a screen shot, but it is only capturing a part of the screen. Here is a screen ... this issue or know why its happening? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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image - How do I use the relationships between Flann matches to determine a sensible homography?

I have a panorama image, and a smaller image of buildings seen within that panorama image. What I want to do ... I should go about doing that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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image - change a bitmap's pixel colour

I am trying to change a bit-map's pixel color if it's white. I wrote following code. But it's awfully ... ; Image1.Picture.Assign(BitMap1); end; See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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image - Fast algorithm for polar -> cartesian conversion

I have an image on a polar grid. This image should be transformed into a cartesian grid, but the only ... expensive in times of memory. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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image - Java : VolatileImage slower than BufferedImage

I'm making a game in java and in used BufferedImages to render content to the screen. I had performance issues ... what is going wrong here ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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image - What are the filenames of new colored Google maps markers?

Is there a handy guide similar to this one for the newer Google markers that reside in the directory http:/ ... other icons from this directory? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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image not loading from URL in custom infoWindow using Picasso image loading library in android

I am trying to load an image from the URL in custom infoWindow when the user click on the marker. I ... into custom InfoWindow google maps v2 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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image - How to convert a grayscale matrix to an RGB matrix in MATLAB?

rgbImage = grayImage / max(max(grayImage)); or rgbImage = grayImage / 255; Which of the above is right,and reason? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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image - php imagecopyresampled poor quality

I have a php script which saves the original image, then resizes it - one thumbnail and one larger ... imagejpeg($new_image, $thumblocation); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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image - What is the header size of png, jpg/jpeg, bmp, gif and other common graphics format?

I have search in google. I found something here, http://paulbourke.net/dataformats/bmp/ , but i can't ... of header about all these format? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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557 views

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image - Facebook Share Dialog does not display thumbnails one first load

I'm using the Facebook share dialog to share a specific url. The shared link contains an image which should be ... since it requires an App ID. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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634 views

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image - Android ImageButton with disabled UI feel

I have an ImageButton which is disabled (non clickable or set as disabled). I want to give an UI feel to the ... Is there any way to do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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599 views

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image - python captcha decoder library

I need a Captcha decoder for python to read simple image captchas like the following picture: Do you know of a ... others like this) with PIL? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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610 views

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image - PHP watermarking

i am using this code to create watermark. $image = '1.jpg'; $overlay = 'stamp.png'; $opacity = "20"; if (! ... the below image in that part....? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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615 views

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image clicked from iPhone in Portrait mode gets rotated by 90 degree

I am uploading an image clicked from iphone both in landscape and portrait mode. The image with landscape mode is ... Any idea why such happens? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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541 views

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image processing - HOG Trilinear Interpolation of Histogram Bins

I am working on Histogram of Oriented Gradient(HOG) features and I am trying to implement the trilinear ... clarify these issues. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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634 views

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image processing - OpenCV - Floodfill onto new Mat

Given a point on an image, I'd like to floodfill all points connected to that point - but onto a new image. A ... . There must be a better way! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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428 views

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image - Converting a series of BufferedImages to a video in Java?

How would I convert an an array of BufferedImages into a video? I'm making a screen recorder. How would I compress the video afterward? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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image - Python OpenCV: Rubik's cube solver color extraction

Description: I am working on solving rubiks cube using Python & OpenCV. For this purpose I am trying to extract all ... P.S.: OpenCV newbie :) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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499 views

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image processing - How to deal with RGB to YUV conversion

The formula says: Y = 0.299 * R + 0.587 * G + 0.114 * B; U = -0.14713 * R - 0.28886 * G ... explain me, may be I don't understand something.. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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795 views

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image processing - Changing pixel color Python

I am suppose to get an image from my fluke robot and determine the color of each pixel in my image. Then if ... pixel Green:%s: return Blue:%s See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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500 views

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image processing - Detect text orientation

How to detect text orientation in an image? It doen't matter if the orientation is upside down (180 deg).. ... is cropped and text is lost See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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579 views

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image - Python code for Earth mover's Distance

I am looking for an Earth Mover's distance(or Fast EMD) implementation in python. Any clues on where to find ... required to set it up. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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568 views

1 answer

image processing - Replicate MATLAB's `conv2()` Using Fourier Domain Convolution

I would like to take two images and convolve them together in Matlab using the 2D FFT without recourse to the ... the output of the program: See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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579 views

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image - Mapping a directory outside the web-app to URL in TOMCAT

I need to map an directory containing images which resides outside tomcat webapps folder, so that application can ... C:/test/images Thanks, See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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492 views

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image - Google Plus Album Urls

I am using google app engine to create a photo gallery site for all of the photos I have taken. The photos ... from a public google plus album? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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521 views

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image processing - Formulas for Barrel/Pincushion distortion

Can't understand how to get (x', y') of original (x, y) in image, for Barrel/Pincushion distortion. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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image conversion - Imagemagick Convert PDF to JPEG: FailedToExecuteCommand `"gswin32c.exe" / PDFDelegateFailed

I have PDFs that I need to convert to images. I have installed Imagemagick. I have a PDF named a ... https://github.com/MattDolan/ImageConverter See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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