Recent questions tagged computer

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computer vision - How can we rotate an RGB image using nearest neighbor interpolation algorithm about a custom pivot point?

I am trying to understand image interpolation algorithms in computer vision. I realize that there are a ton of ... in the image below) ? See Question&Answers more detail:os...

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

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computer vision - System.TypeInitializationException using Emgu.CV in C#

At this point I have a function which calls for an image from my camera interface. This image is then saved to ... (when it doesn't crash)? See Question&Answers more detail:os...

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

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computer vision - C++ face detection/recognition implementations

I'd have thought that google could answer this question, but I've not had much luck. Does anyone know ... of Fisherfaces anywhere? 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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computer vision - Logo detection using OpenCV

I'm attempting to implement an easter egg in a mobile app I'm working on. These easter egg will be ... in a more reliable manner? 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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computer vision - How to understand the KITTI camera calibration files?

I am working on the KITTI dataset. I have downloaded the object dataset (left and right) and camera ... 998881000000e-01 -7.997231000000e-01 See Question&Answers more detail:os...

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

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computer vision - number of parameters in Caffe LENET or Imagenet models

How to calculate number of parameters in a model e.g. LENET for mnist, or ConvNet for imagent model etc. ... of parameters in a model. regards See Question&Answers more detail:os...

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

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computer vision - number of parameters in Caffe LENET or Imagenet models

How to calculate number of parameters in a model e.g. LENET for mnist, or ConvNet for imagent model etc. ... of parameters in a model. regards See Question&Answers more detail:os...

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

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computer vision - How to use flann based matcher, or generally flann in opencv?

http://opencv.willowgarage.com/documentation/cpp/features2d_common_interfaces_of_descriptor_matchers.html#flannbasedmatcher Please can ... . See Question&Answers more detail:os...

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

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computer science - Why are NP problems called that way (and NP-hard and NP-complete)?

Really.. I'm having the last test for graduation this Tuesday, and that's one of the things I just never could ... to get it (-: Thanks all! See Question&Answers more detail:os...

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

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computer science - Does anybody know from where the "layer of abstraction"/"layer of indirection" quote emerged?

The quote goes something like this: There's no problem in Computer Science that can't be solved by adding another ... where this may come from. See Question&Answers more detail:os...

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

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computer vision - Detect rings/circuits of connected voxels

I have a skeletonized voxel structure that looks like this: The actual structure is significantly larger than this ... larger than this example) See Question&Answers more detail:os...

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

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computer vision - OpenCV extrinsic camera from feature points

How do I retrieve the rotation matrix, the translation vector and maybe some scaling factors of each camera using ... that kind of problem? See Question&Answers more detail:os...

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

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computer vision - OpenCV: Detect blinking lights in a video feed

I have a video feed. This video feed contains several lights blinking at different rates. All lights are the same ... to be written for me. See Question&Answers more detail:os...

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

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computer architecture - word size and data bus

I am confused about the definition of word size. I read that the word size of a processor is its data ... bytes can be accessed via pointers. See Question&Answers more detail:os...

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

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computer science - Why are both little- and big-endian in use?

Why are both little- and big-endian still in use today, after ~40 years of binary computer-science? Are there ... to one and stick with it? See Question&Answers more detail:os...

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

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computer vision - How to do perspective correction in Matlab from known Intrinsic and Extrinsic parameters?

I'm using Matlab for camera calibration using Jean- Yves Bouget's Camera Calibration Toolbox. I have all ... intrinsic and extrinsic parameters! See Question&Answers more detail:os...

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

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computer science - What does "in constant time" imply?

I work as a programmer, but have no computer science background, so recently I've been following along with the ... I'd be very grateful! See Question&Answers more detail:os...

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

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computer vision - How to input the image to the neural network?

I understand how neural networks work, but if I want to use them for image processing like actual character ... explain how 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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computer vision - How do you decide the parameters of a Convolutional Neural Network for image classification?

I am using Convolutional Neural Networks (Unsupervised Feature learning to detect features + Softmax Regression Classifier) ... (max pooling). See Question&Answers more detail:os...

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

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computer vision - Extracting HoG Features using OpenCV

I am trying to extract features using OpenCV's HoG API, however I can't seem to find the API that allow me ... I could use ? Thanks in advance See Question&Answers more detail:os...

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

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computer science - What cache coherence solution do modern x86 CPUs use?

I am somewhat confused with what how cache coherence systems function in modern multi core CPU. I have seen ... node to node communications)? See Question&Answers more detail:os...

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

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computer vision - Data Augmentation Image Data Generator Keras Semantic Segmentation

I'm fitting full convolutional network on some image data for semantic segmentation using Keras. However, I'm having ... all at once. 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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computer vision - How can I get Camera Calibration Data on iOS? aka AVCameraCalibrationData

As I understand it, AVCameraCalibrationData is only available over AVCaptureDepthDataOutput. Is that correct? ... etc.). See Question&Answers more detail:os...

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

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computer vision - how to draw curve on control points using opencv

I want to draw curve on control points so that I can move the curve to change the colours , below is the code ... the control points per B,G,R See Question&Answers more detail:os...

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

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computer vision - Intersection-over-union between two detections

I was reading through the paper : Ferrari et al. in the "Affinity Measures" section. I understood that ... help is very much appreciated. See Question&Answers more detail:os...

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

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computer vision - How to implement pixel-wise classification for scene labeling in TensorFlow?

I am working on a deep learning model using Google's TensorFlow. The model should be used to segment and label ... if not, what other options? See Question&Answers more detail:os...

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

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computer vision - What's the triplet loss back propagation gradient formula?

I am trying to use caffe to implement triplet loss described in Schroff, Kalenichenko and Philbin "FaceNet: A ... gradient in back propagation? See Question&Answers more detail:os...

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

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computer vision - Stitch multiple images using OpenCV (Python)

Hi have seen a lot of tutorials how to do simple image stitching using two photos and that is no problem. But ... see what I am doing wrong. See Question&Answers more detail:os...

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

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