Questions tagged [image]

An image is a file containing the complete data of another medium, e.g. the content of a SD card.

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Turning on Camera with code

I found the following code (on http://blog.oscarliang.net/raspberry-pi-face-recognition-opencv/) import cv cv.NamedWindow("w1", cv.CV_WINDOW_AUTOSIZE) camera_index = 0 capture = cv.CaptureFromCAM(...
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0answers
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Facial Recognition on Raspberry Pi using GoPro

I was wondering if someone can tell me how to process a live video feed on the Pi (B) using a GoPro camera? I understand that there may be processing constraints. Then, I would like to do image ...
2
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1answer
3k views

Fast image array processing with Pi NoIR camera in Python using picamera module

I'm working on a project with a RasPi in which I have to find a bright spot in an image (the bright spot is fire). I've written a function (code below) which captures images to RGB arrays using the ...
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1answer
908 views

Raspbmc windows installer “Does Nothing”

When using Raspbmc from the original developers page Windows Installation, after finishing with the Windows Installer and following the installation note and also getting Successful message, it's the ...
2
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1answer
2k views

Taking a video stream with io.bytesio() and accessing frames during recording time

I've been looking into using picamera and so far I've managed to capture a sequence of images and process them, but found the time it takes between frame captures is horrible(ish), so i turned to ...
2
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0answers
2k views

Bad magic number in super-block when trying to resize RPi image

I'm trying to follow RomanG's instructions in this thread: http://www.raspberrypi.org/forums/viewtopic.php?f=91&t=19468 on the Raspberry Pi Forums in order to shrink a Raspbian Image to fit on a ...
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2answers
747 views

How can I save my SD card without to make a too big image file?

I used Win32DiskImager. This made about my 8 GB SD card an 8 GB image file. But the partition is only about 50-70 MB big (I'm using RaspBMC)
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1answer
171 views

How do i save pic to the same png rather than creating a new png each time a pic is taken

i have a question, How do i save pic to the same png rather than creating a new png each time a pic is taken this is the command that execute the pic: *cd ~ mkdir picture cd picture screen ...
3
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3answers
2k views

Stereo camera frame synchronization/genlock (video or still image)

I need to frame synchronize a stereo camera for a computer vision application. The synchronization should be on a millisecond level possibly. I would like to get about 10 FPS either as video or still ...
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1answer
4k views

Optimising ImageMagick Conversions for Raspberry Pi

I've been working with ImageMagick on the Raspberry Pi (model B) and have noticed a bottle neck in the area of image conversions. When converting between bmp, jpg, png, etc. the speeds are acceptable ...
3
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1answer
9k views

raspberry pi python-tesseract install

A few months ago I created a project that uses the python-tesseract library on the raspberry pi. Since then I reinstalled rasbpian, and now I would like to reinstall the python-tesseract libary. The ...
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2answers
34k views

Take images in a short time using the Raspberry Pi camera module

I'm working on a project in which I need to take about 30 images per second (no movie) using the Raspberry Pi camera module. I'm using the Picamera library (http://picamera.readthedocs.org/en/latest/...
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1answer
199 views

Any IP cam image distribution available (that fits in 1Gig)?

i just bought a Raspberry Pi together with a PI-Cam, planning to use it as a custom surveillance camera setup (as described here). Unfortunately I found out that I need a 4Gig SD card in order to ...
2
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3answers
523 views

Can I perform a total backup of my system on an image file?

I am pretty new in Linux. I am configuring my Raspberry that use Raspbian. Before to perform some settings I want to have a backup of my entire system in the current state. What can I do to save the ...
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1answer
2k views

install U-boot : error : Makefile:501: *** “System not configured - see README”. Stop

I try to install u-boot . I followed [ http://elinux.org/RPi_U-Boot ] I downloaded source form git git clone git://git.denx.de/u-boot.git and get the Raspberry compiler git clone git://github.com/...
13
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4answers
28k views

SD Image won't fit on SD Card

I have had one pi set up and running good for a while (RPi - 1). I wanted to create an image of RPi - 1 so I can load an exact copy onto my 2nd pi (RPi - 2). The SD card in RPi - 1 is 4GB (only about ...
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3answers
2k views

How to do a minimal size backup after expand_rootfs under Windows?

I downloaded official Raspbian image, did expand_rootfs, updated everything, installed needed packages, removed unneeded packages. So, now after everything is setup fine, I wanted to backup this image ...
3
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1answer
2k views

snort+snorby snapshot image or auto-installer

Is there a snapshot image file (*.img) like 'Raspbian' or 'Pidora' available for the RPi that comes with already installed passive IDS: snorby+snort+pulledpork+barnyard2+apache2+MySQL? Or is there ...
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5answers
73k views

How can I mount a Raspberry Pi Linux distro image?

Normal filesystem images can be easily mounted: mount system.img /mnt Examined, and modified. But when I try this with a Raspberry Pi system image (e.g. raspbian), I get: mount: unknown filesystem ...
2
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2answers
4k views

open a win32diskimager-imported file on Windows

I have a raspberry pi. I did a backup by importing an image with win32diskimager. Is there any way to open this imported image and explore the filesystem in it? I'm on Windows 8, but Windows can't ...
4
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1answer
3k views

Existing Raspbian Installation in Qemu on Windows

I have a Raspberry Pi Model B running Raspbian NOOBS, which I'm preparing to use as a media centre / Node.JS server. I have followed various tutorials and managed to get a premade Raspbian image up ...
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2answers
4k views

Why I can't copy my Linux image to another SD card?

I have 2 SD cards (8 GB) I wrote my Wheezy image into one SD card (using Win32DiskImager) and I expanded the the disk space of the image on that card. then I used (Win32DiskImager) to read the Image ...
4
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2answers
20k views

how do I enable JPEG support with PIL?

By default, PIL doesn't have jpeg support on the Raspberry Pi, so it returns the following: IOError: decoder jpeg not available This can also be seen while installing PIL: *** JPEG support not ...
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1answer
2k views

Arch Linux ARMv6 latest image don't boot

I'm trying to run Arch Linux ARM on Raspberry Pi, following instructions from http://archlinuxarm.org/platforms/armv6/raspberry-pi. I've tried with two cards, 8 and 16 GB, but with same result: power ...
18
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1answer
6k views

Is there a way to alter the raspberry image that appears during boot?

A glint-box community member recently asked me if there was a way to replace the raspberry image that appears in the top-left corner of the screen during boot to something more NES-centric, such as a ...
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1answer
3k views

bitmap display programming in C [closed]

I have been working in DOS in the stoneage with C graphics. I want to display a bitmap that is computed as an array in the format my_bytes(x,y). In dos an fixed pointer address to the hardware bitmap ...
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4answers
2k views

What software library is avaliable for RPI camera module?

Where can I find software library to play with camera module? What is the quality of images? Is there any page that explains how camera module works? Does the image processing module use NEON?
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5answers
47k views

How to make an image (.img) from what's on the SD card (but as compact as the original one)?

I tried: sudo dd bs=4k if=/dev/mmcblk0 of=/media/1BAB47551C66A42B/raspbian_migs2.gz It creates an .img file with 7.6 GB (card size, BUT what's on the card has 700 MB). And: sudo dd bs=4k ...
2
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2answers
8k views

Is there a pre-built LAMP server image for the Raspberry Pi?

I'm looking to set up a simple LAMP server. I do know how do this manually. I am not looking for a guide as to how to setup a LAMP server. Is there a pre-built LAMP server image that already has PHP, ...
13
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4answers
27k views

How to printscreen on Raspberry Pi?

I would like to screenshot the Midori browser and i've tried the following methods as mentioned HERE. Using Imagemagick which is pre-installed in Raspberry Pi. I pressed the printscreen key on the ...
19
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4answers
39k views

Image of a 16Gb card containing unpartitioned space at the end: Truncating possible?

I wanted to prepare a distro for some friends. As I didn't have anything else lying around, I used a 16Gb SD card. I started with the default Debian Weezy 2Gb image and did not do any resizing. Now, ...
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1answer
3k views

How do I improve speed of photo/image resize? (~8MB to ~100KB)

I'm building a program which reads photos off an SD Card then resize the images and upload them to Flickr (note, it's a second SD Card reader, not the one on-board) The photos are high-resolution JPG'...
28
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9answers
47k views

Copy existing Raspbian installation to smaller SD card

Is it possible to copy an existing and configured Raspbian installation to a smaller SD card? When I first installed Raspbian I only had a 32 GB card at hand which obviously is bigger than needed.
87
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9answers
108k views

Can a Raspberry Pi be used to create a backup of itself?

This question answers the question of how I use an external computer to create a backup of my RPi. I'm wondering whether I can create a backup image of the SD card that is currently in use, and ...
13
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4answers
36k views

How to resize an image file before writing to SD card?

I've been trying to create a new Raspbian image with a different kernel (with CAN support) and with Python 3.3 installed. Rather than doing all of this on the Raspberry Pi, I thought it would be ...
12
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3answers
6k views

Raspberry Pi for real time video processing

A project I'm working on involves wireless transmission of images from a camera to a host computer in real time. Can the Raspberry Pi be used as a DSP for the camera for image acquisition and pre-...
3
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3answers
5k views

Raspberry Pi not booting at all with most images, but with some it does

I am having a very basic problem with my raspberry PI: It can't get it boot when I flash Images with dd on Linux nor with Win32 Image Writer on Windows. I tried several *.img-images, such a as Arch, ...
21
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5answers
58k views

Copy current SD image to larger SD card

So I got my new pi and the only free SD I had was 2GB. I couldn't hold off playing with it so it had to do for the time being. I loaded raspbmc and then spent time loading repositories, add-ons and ...
24
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2answers
12k views

FreeBSD - easiest way to install on my RPi?

Raspberry Pi support has been merged into FreeBSD-CURRENT a few months ago. However the latest installation instructions still involve a lengthy process of cross-compiling the entire OS on another ...
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2answers
3k views

Making a new image after changing a few parameter of Raspbian

I got Raspbian on a SD card. It is working. Then I installed a few program, modified some visual settings, and added some config files. What I would like to do now is release this image to other ...
11
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1answer
2k views

System not shutting down properly

I'm running Arch, and when I shut down with the poweroff command (or with shutdown -h now) the 3 LEDs mentioned stay on. In addition, if I've plugged it into a screen, it displays > POWER OFF ...
11
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2answers
10k views

Custom Raspbian image fails to boot with “no init found”

I'm building a custom SD image of Raspbian using debootstrap, and the resulting image fails to boot with Kernel panic - not syncing: No init found. on both my Raspberry Pi and under qemu. I can ...
16
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2answers
4k views

After writing an SD card image, is the remaining space usable?

Forgive me if this is basic, because I'm used to writing CD images, I'm not sure how this works. The Raspbian image is about 440MB (zipped at least). If I write the image onto a 16GB card, will all ...
49
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3answers
77k views

How to add custom loading screen?

I would like to make Raspberry PI useful for TV purpose or so... Therefore I would like to show to end user loading image before entering the X-Windows and starting customized desktop... So instead ...
24
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11answers
34k views

How can I copy the same image to many SDs?

So finally I can place that bulk order for Raspberry Pis! However, configuring them is going to be a chore. What I'd like to do is: Download a stock image, and tinker with it on a single Pi Save/...

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