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Search found 11 results on 1 pages for 'downsampling'.

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• Reducing moire when downsampling halftone comic images.

  - by drawnonward

  How can I reduce moire effects when downsampling halftone comic book images during live zoom on an iPhone or iPad? I am writing a comic book viewer. It would be nice to provide higher resolution images and allow the user to zoom in while reading the comic book. However, my client is averse to moire effects and will not allow this feature if…

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• Downsampling and applying a lowpass filter to digital audio

  - by twk

  I've got a 44Khz audio stream from a CD, represented as an array of 16 bit PCM samples. I'd like to cut it down to an 11KHz stream. How do I do that? From my days of engineering class many years ago, I know that the stream won't be able to describe anything over 5500Hz accurately anymore, so I assume I want to cut everything above that out…

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• Downsampling the number of entries in a list (without interpolation)

  - by Dave

  I have a Python list with a number of entries, which I need to downsample using either: A maximum number of rows. For example, limiting a list of 1234 entries to 1000. A proportion of the original rows. For example, making the list 1/3 its original length. (I need to be able to do both ways, but only one is used at a time). I believe…

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• mp3 downsampling / compression in java

  - by veenit33

  Well, i was looking forward to modify the bit rate of a mp3 file in java. I want to downsample(change its bit rate) the mp3 file from 256/384 kbps to say 64/128 kbps.. (I guess this is the only way one can achieve mp3 compression..or is there any other way.?) I searched for LameOnJ but that website is temperoraly down and so im not…

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• When running Adobe Acrobat's OCR on a PDF document, which downsampling produces a higher quality: 600 dpi or 72 dpi?

  - by Ricardo Altamirano

  I have a large PDF document that consists of scanned pages of a textbook. I want to run Adobe Acrobat 9's text recognition function on it, but I'm presented with this menu when I do. I'm confused by the options in the highlighted menu. What option will produce the highest quality/most readable text? I thought 600 dpi implies a…

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• How do I know if my system is capable of playing 24bit/96kHz sound?

  - by Igor Zinov'yev

  Let me state for the record that I'm a total noob when it comes to Hi-Fi sound systems, but I am rather picky about the sound quality. Normally I listen to CD recordings ripped to FLAC in 16/44, but I have several albums that are also ripped from vinyls to FLAC in 24/96. But it seems that I can't tell the difference between 16-bit…

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• PDF rendering of images seems to vary from viewer to viewer with blurring?

  - by AndyL

  I'm generating PDF figures in Adobe Illustrator CS5 that include embedded images. I've noticed that the images look dramatically different when I display the same PDF in Preview, Skim or Adobe Reader (I'm on OS X). See screenshots. Adobe Reader displays them "correctly" while Skim and Preview blurs the image out each in a…

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• Capture documents in bitonal, or grayscale then downsample

  - by Jason R. Coombs

  I'm about to embark on a document archival process. I'm going to spend a lot of good money to archive some paper (actually microfiche) to TIFF images. I have a choice of 300-dpi bitonal (2-bit, black/white) or 300-dpi grayscale (8-bit). Cost is the same for either format. Data volume (and thus image size) is not a…

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• Help with Neuroph neural network

  - by user359708

  For my graduate research I am creating a neural network that trains to recognize images. I am going much more complex than just taking a grid of RGB values, downsampling, and and sending them to the input of the network, like many examples do. I actually use over 100 independently trained neural networks that…

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• Subband decomposition using Daubechies filter

  - by misha

  I have the following two 8-tap filters: h0 ['-0.010597', '0.032883', '0.030841', '-0.187035', '-0.027984', '0.630881', '0.714847', '0.230378'] h1 ['-0.230378', '0.714847', '-0.630881', '-0.027984', '0.187035', '0.030841', '-0.032883', '-0.010597'] Here they are on a graph: I'm using it to obtain the…

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• BluRay audio/video stuttering with PowerDVD 11, WinDVD 11 Pro, etc? Xonar/Auzen HD audio option?

  - by jrista

  I recently upgraded my Windows 7 MediaCenter HTPC due to a motherboard failure (really old motherboard and cpu, it was on its last legs.) I chose to upgrade to an i5 system with everything built into the motherboard. I did my due diligence, researched, and found some hardware that was within my budget. I…

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