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Questions tagged [color-depth]

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color-depth
0 votes
0 answers
39 views

Altering indexed bitmap's byte array breaks image display

I'm loading a .PNG file with a 1-bit color depth (so, indexed), converting it to a byte array, JSON-serializing it, and sending it as a response to a call to a web API by a Blazor web assembly app, ...
Eric Eggers's user avatar
0 votes
0 answers
21 views

Near-shore bathymetry contours of a QGIS map

I have created a QGIS map and I am currently attempting to represent the nearshore bathymetry and depth contours. Unfortunately, I am facing an issue where I cannot get different depth colours for the ...
Miriam's user avatar
  • 21
0 votes
0 answers
48 views

Disparity Map obtained through StereoSGBM is flickering

I am trying to implement stereo vision using 2 RPI v2 Cameras kept 8.43cm apart. After performing camera calibration and rectification, I used StereoSGBM to compute disparity map. But for some reason, ...
lonewolf's user avatar
-1 votes
1 answer
76 views

depth map of specific object

everyone! i am trying to find distance of an object(apple for example) from my camera(using a single camera) by using depth map created by neural network(like pydnet or MiDaS) I have two problems: I ...
Reza shahriari's user avatar
0 votes
1 answer
298 views

Converting RGB images into greyscale using a color palette

I ran a algorithm that gave me rgb images, representing the estimated depth of the pixels of the imgs. Since it's representing a value, i wanted to convert it to greyscale. However, the rgb palette ...
Sivloc's user avatar
  • 3
1 vote
1 answer
318 views

How to replicate IrfanView's colordepth reduction using ImageMagick?

I usually use IrfanView v4.62 to decrease colour depth for PNG images to 4 bits per pixel. But I now need to use ImageMagick v7 because I need to cron a batch job on Linux (CentOS 7.9). IrfanView ...
cakepuller's user avatar
0 votes
1 answer
415 views

how does depth_multiplier in tensorflow DepthwiseConv2D work?

Currently I am studying about Computer Vision, and studying about Depthwise Convolution. (Not Depthwise Seperate Convolution!) So, What I want to know is how does "depth_multiplier" argument ...
danny lee's user avatar
1 vote
0 answers
464 views

Align RGB image to Depth Image using Intrinsic and Extrinsic Matrix

similar questions are solved many times. However, they generally maps depth coordinates to RGB coordinates, by following the next steps: apply the inverse depth intrinsic matrix to the depth ...
CristoJV's user avatar
  • 500
1 vote
3 answers
2k views

How to properly use OpenCV VideoWriter to write monochrome video with float32 source data type in Python?

I am trying to store video file from multiple sources (color, depth, and infrared) from Kinect sensors. This is the image that I visualized using cv2.imshow command using the following code: cv2....
kamicj's user avatar
  • 11
0 votes
1 answer
1k views

Tesseract produced searchable PDF with 8bit depth back to 1bit (tess4j)

I have a PDFs with 1-bit color depth as an input for OCR processing (tess4j, 5.0.0) with approx. 30kb each. After processing, each PDF has 120-130kb and is saved with 8-bit color depth, which is ...
juststeve's user avatar
0 votes
1 answer
708 views

Get pixels color value in float (HDR)

Is it possible in Python to read an image and get each pixels color (12 bits depth) value between 0-1 (or 0-255 in float) without doing the conversion to 0-255 -> 0-1 range. This way I won't get ...
huangkaiyi's user avatar
0 votes
1 answer
746 views

How can I get disparity map and depth map from the feature matching result?

I get a good result from the paper: LoFTR: Detector-Free Local Feature Matching with Transformers. Now I want to get a depth map from the feature matching result. So I really hope that maybe someone ...
Cindy Wang's user avatar
0 votes
0 answers
180 views

How to set fewer than 32 bpp for SDL window?

I've been trying to write a program that uses SDL for drawing, but I've been unable to find any way to set 15-bits per pixel (2 bytes per pixel) rather than the 4-byte RGBA that it sets by default. I ...
UFCDev's user avatar
  • 1
5 votes
0 answers
309 views

Color Depth React Native

Is there a way to get the color depth of the device using React Native? The Javascript window object has no such property (at least not in RN) and window.screen is undefined. In the Dimensions (RN ...
unicorn's user avatar
  • 51
0 votes
0 answers
286 views

segment non-homogeneous image background with opencv

I have an image of a scanner and i wanted to segment the background but the background is not homogeneous. how could i do that? My Input is a cloud points I used the code below to convert to a depth ...
aliel's user avatar
  • 187

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