What is digital colour image processing?
It is the processing (changing) of color images using a computer.
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How do you add a watermark to a digital image?
How To Add Watermark To A Digital Image: It's relatively easy ifyou have the software program (it will instruct you step-by-step.)There are so many different software's you will have to go onto:www. google.com to decide which one is right for you. Type in:Software for watermarking digital imagery. This will enable you towatermark ANYTHING and just not digital images. There are two typesof watermark one that is visible and another the is invisible:)Also you can add watermark to protect image or to protectimportant image hidden inside normal image. I use Aoao PhotoWatermark Software for protecting my images by visible watermarks:http://www.aoaophoto.com/
What is digital image processing?
Image processing is the method of processing data in the form of an image. Image processing is not just the processing of image but also the processing of any data as an image. It provides security.
What is autonomous segmentation in digital image processing?
Autonomous = done automatically by a software (used in robotics) Image segmentation = dividing the image into parts that can be used later to recognize relevant image features (like objects) The definition of autonomous segmentation is summing up both terms and refers to a automatic, without human intervention, segmentation of the image. It means that the segmentation algorithms auto-calibrate themselves. This may seem a simple task for a controlled indoor environment, but can also become a huge complexity in outdoor scenes where the lightning conditions are ranging from complete darkness to direct sunlight on the sensor.
What is image processing?
Image Processing is area in which image is processed based on pixel (spatial) and frequency methods. In spatial method pixel value are subject to change For more details on image processing research visit http://imageprocessing.webs.com/
What is a process image?
image processing In electrical engineering and computer science, image processing is any form of signal processing for which the input is an image, such as photographs or frames of video; the output of image processing can be either an image or a set of characteristics or parameters related to the image. Most image-processing techniques involve treating the image as a two-dimensional signal and applying standard signal-processing techniques to it.
What is digital imaging?
Digital imaging or digital image acquisition is the creation ofdigital images, typically from a physical scene. The term is oftenassumed to imply or include the processing, compression, storage,printing, and display of such images.
How does a digital camera capture an image?
the light passes through the lens, arpeture,ige sensor(that will process the image,it will be stored in the memory card of the camera by the connections in it.
What is the difference in image clarity in digital image processing and optical image processing?
Digital image is depending on the camera resolotion, where optical image depends on the quality of the film. Normally an optical image will be better then a digital image, unless you are using high end digital camera. I hope this helps, Icko www.rtgallery.com
What is 'mean filter' in digital image processing?
The Average (mean) filter smooths image data, thus eliminating noise. This filter performs spatial filtering on each individual pixel in an image using the grey level values in a square or rectangular window surrounding each pixel. For example: a1 a2 a3 a4 a5 a6 3x3 filter window a7 a8 a9 The average filter computes the sum of all pixels in the filter window and then divides the sum by the number of pixels in the filter window: Filtered pixel = (a1 + a2 + a3 + a4 ... + a9) / 9
How does a digital camera record an image?
Digital cameras are very much like all earlier cameras. Beginning with the very first camera all have been basically black boxes with a lens to gather the light, a wheel you turned to focus the image, an aperture that determines how bright the light is, and a shutter that determines how long the light enters. Digital cameras use a solid-state device called an image sensor. In some digital cameras the image sensor is a charge-coupled device (CCD), while in others it's a CMOS sensor. On the surface of these fingernail-sized silicon chips are millions of photosensitive diodes, each of which captures a single pixel in the photograph to be. When you take a picture the shutter opens briefly and each pixel on the image sensor records the brightness of the light that falls on it by accumulating an electrical charge. The more light that hits a pixel, the higher the charge it records. Pixels capturing light from highlights in the scene will have high charges. Those capturing light from shadows will have low charges. After the shutter closes to end the exposure, the charge from each pixel is measured and converted into a digital number. This series of numbers is then used to reconstruct the image by setting the color and brightness of matching pixels on the screen.
When was digital imaging invented?
The first digital image was created in 1920 with the invention ofthe Bartlane cable picture transmission system. It was invented byHarry G. Bartholomew and Maynard D. McFarlane.
How do you digitize an image?
Digitizing an image involves capturing it from paper using ascanner for presentation and storage on the computer. On thecomputer, the now-digital image can be improved image processingtools.
What is the difference between image processing and digital image processing?
Digital uses mega pixels ... vs film resolution is based on the area u have to record the image
What are digital images?
A Digital image is a two dimensional array, or a matrix, of square pixels (picture elements) arranged in columns and rows. A digital image is composed of a finite number of elements called pixels (short for picture elements), each of which has a particular location and value. Each pixel represents the colour (or gray level for black and white photos) at a single point in the image, so a pixel is like a tiny dot of a particular color.
What is a divice that will digitize an image?
\nI am assuming that you want to take a physical photo and get it onto the computer. In that case, you will need a "scanner". A scanner takes a physical photo and converts it into a digital file on your computer. You can buy a scanner at any local computer store, although many come in the form of a "multi-function" device, which is a combination printer/scanner/copier & sometimes fax machine.
What is a digital image?
\n\n . \n\n Digital imaging is the art of making digital images â \nphotographs, printed texts, or artwork - through the use of a digital \ncamera or image machine, or by scanning them as a document. Each image \nis compiled of a certain amount of pixels , which are then mapped onto a grid and stored in a sequence by a computer. Every pixel in an image is given a tonal value to determine its hue or color. www.morphacademy.com .
Disadvantages of digital image processing?
Disvantages: 1) It's very costly depending on the system used, the number of detectors purchased. 2) Time consuming 3) Lack of qualified professional
Why you call the D4 distance as a city block in digital image processing?
It's called city-block distance, because it is calculated as if on each pixel between your two coordinates stood a block (house) which you have to go around. That means, you can only go along the vertical or horizontal lines between the pixels but not diagonal. It's the same like the movement of the rook on a chess field.
Latest seminar topics on digital image processing?
please tell me ... which recent topics are going in digital image processing for research area .
What is preprocessing in digital image processing?
The procedure done before processing by correcting image from different errors is preprocessing.this has to be done before image enhancement
What is a digital imaging software?
Digital Imaging Software is a type of program that people use to create digital images, also known as digital art, which is becoming very popular. If you go to www.digitalart.org, you can see some example of digital art. They have different types of programs but its basically programs, like Word is for writing letters and essays, and PowerPoint is made for slideshows...
What is 'smoothing filter' in digital image processing?
smoothing is a noise reduction technique that derives its name from the fact that it employs a simple, fast filtering algorithm that sacrifices noise suppression power in order to preserve the high spatial frequency detail ( e.g. sharp edges) in an image. It is explicitly designed to remove noise spikes --- i.e. isolated pixels of exceptionally low or high pixel intensity ( e.g. salt and pepper noise) and is, therefore, less effective at removing additive noise ( e.g. Gaussian noise) from an image.. email@example.com
How are digital images transmitted?
Digital images are transmitted on computer networks by firstcompressing them to reduce their size. JPEGs are an example ofcompressed image files.
Digital image processing question papers-anna university?
If a student needs the digital Imaging processing papers they wouldbe able to find them by visiting the college and asking a professorfor the papers. Any of the professors for these classes should havethese papers.
What is sobel algorithm in digital image processing?
Most edge detection methods work on the assumption that the edge occurs where there is a discontinuity in the intensity function or a very steep intensity gradient in the image. Using this assumption, if one take the derivative of the intensity value across the image and find points where the derivative is maximum, then the egde could be located. The gradient is a vector, whose components measure how rapid pixel value are changing with distance in the x and y direction. Thus, the components of the gradient may be found using the following approximation: ( ) x f x y Â¶ Â¶ , = D x = ( ) ( ) dx f x + dx , y - f x , y (3) ( ) ( ) ( ) dy f x y dy f x y y x f x , y = D = , + - , Â¶ Â¶ (4) where dx and dy measure distance along the x and y directions respectively. In discrete images, one can consider dx and dy in terms of numbers of pixel between two points. dx = dy = 1 ( pixel spacing) is the point at which pixel coordinates are( i , j ) thus, D x = f ( i +1, j )- f ( i , j ) (5) D y = f ( i , j +1)- f ( i , j ) (6) In order to detect the presence of a gradient discontinuity, one could calculate the change in the gradient at ( i , j ) .This can be done by finding the following magnitude measure M = D x 2 + D2 y (7) and the gradient direction q is given by ï£ºï£» ï£¹ ï£¯ï£° ï£® D D = - x 1 y q tan
Fundamental components of digital image processing?
The fundamental components of digital image processing arecomputer-based algorithms. Digital image processing allows a muchwider range of algorithms to be applied to the input data and canavoid problems such as the build-up of noise and signal distortionduring processing.
What is the significance of digital imaging in forensics?
Digital imaging is allows for block to block copying of a suspect storage device. Imaging differs from drag & drop copying, in that it makes an identical copy of the drive (to include slack space) instead of just copying the files themselves. A write blocker may be required in some cases to prevent unintentional writing by the OS. Once the original has been imaged at least twice, either an MD5 or SHA1 hash (digital fingerprint) is made to compare it against the images. If they match, then it is trivial for a forensic analyst to prove to the client that the evidence has been unaltered, and anything acquired is identical to what the suspect had on his original drive.
Why do doctors use digital imaging?
plastic surgeons use it to create images of what the person will look like after their surgery. it is also used in x-rays
Difference between Digital image processing and computer graphics?
There is always a confusion among the newbies about the difference between Image Processing and Computer Graphics. Unless specifically mentioned , Computer Graphics is all about Synthesizing a new image from Geometry , Lighting parameters , Materials and Textures . The Emphasis is on Digital Image Synthesis. Image Processing is the process of manipulating an image acquired through some device . The image too often will be acquired from photographs,scanners , medical equipments. The emphasis is on Analysis and Enhancement of the image. Computer Vision is an area where Image Analysis is used a lot. Raster Operations dominate in the case of image processing. In the case of Computer Graphics , you will mix vector and raster operations to generate the final image.
Where does the digital in digital imaging comes from?
The 'digital' in 'digital imaging' comes from the fact that the images are stored digitally, that is the image is stored in a file as a collection of numbers (digits). (In the same way that in French they are called 'numÃ©rique', meaning 'numerical'.) Those images which are not digital are analog, meaning that the image is transferred directly (to the film and then to photographic paper), rather than being encoded in some manner. It's the same difference as between an MP3 and a vinyl.
What is difference between digital image processing and digital signal processing?
Digital Image Processing is a type of Digital manipulation pertaining to pictures and video. "Photoshopping" a digital picture is an example of Digital Image Processing. Another example is what takes place in a digital camera when the image is captured on the image sensor and converted into a JPEG file to be saved on a memory card. Digital Signal Processing is a generic term for any manipulation of a Digitally encoded signal, such as Audio, Video, or Radio Signals. This also includes Digital Image Processing where there is a signal being sent from one part of a system to another, such as in a digital camera. There are Microprocessors that are specifically built to process digital signals known as "Digital Signal Processors" (or DSP's).
How do you file digital images?
A categorization system for photographs depends entirely upon a photographer's workflow. Some may prefer categorizing by date and time, whereas others will do it by subject.
What is the latest technology in digital image processing?
There have been many technological advancements over the years.Amazing processing speeds, quality, controls, and print methods areamong the advancements we use today.
How do you find flat region in digital image processing?
You could calculate two perpendicular gradients to each image pixel point. If both gradient are small the pixel pertains to a flat region.
What is the disadvantage of your images on a digital camera?
In terms of quality, the difference has been decreasing rapidly. I would say one advantage is there is no negative. Some years from now your images should not have any color fading, dust, scratches or other marks. One major disadvantage is there is no negative. So write protect your original files and make multiple backups using DVD's or different drives, and if possible, different locations to store them. Nothing is worse than suddenly getting the dreaded " disk does not appear to be formatted " error regarding the drive that until yesterday contained your entire collection of images from once-in-a-lifetime events which you spent a great many hours editing.
What are the advantages and disadvantages of digital image processing?
Digital image processing is great because you can save a filedigitally and it can be uploaded in a matter of seconds. Adisadvantage is that some may edit their photos instead of takinghigh quality photographs.
What is a digital image file?
An image, contained in a specified format (JPEG, PNG, bitmap) stored digitally (magnetically) on a backing-store medium.
What is noise suppression in digital image processing?
removing noise from digital images. Noise is random color pixels which appears at digital images.
What is the best book to study basics of digital image processing?
Adobe Photoshop CS5 Classroom in a Book is official Adobe recommendation to get started. see related link for details.
What are the four major areas of computer operations in digital image processing?
The four major areas of computer operations in digital image processing is contrast enhancement. The second is remove the blur from pictures and smooth out graininess. The third would be magnifying, and rotating an image. Finally the image is compressed for storage.
How do digital cameras store images?
Digital cameras can either store images on the camera itself but a small amout, or some cameras now have slots in them to insert a memory card that can store images.
What is dither in digital image processing?
Dither is an intentionally applied form of noise used to randomize quantization error, preventing large-scale patterns such as color banding in images. Dither is routinely used in processing of both digital audio and digital video data, and is often one of the last stages of audio production to compact disc
What is image acquisition in digital image processing?
It is the creation of digital image, typically from a physical scene. The term assumed to imply or include processing,compression, storage, printing, and display of such image.
Why do you go for digital image processing?
Lot's of photographers use digital image processing as opposed to old fashioned because you can do non-destructive editing and come back at a later time and make changes. Using the old fashioned way of editing (using film and chemicals), if you ie. overexpose part of the image, or remove an element, you are stuck with the changes you made.
How do you perform frequency signal processing on 3d laser scanner images so that the colours match those of an ordinary camera photograph?
That would be hard, if not impossible. Lasers work purely by reflection back from an object. Colour information comes from the frequency of light. Your detection equipment would have to simultaneously detect the laser light and the different frequencies of light.
How do you retrive the data from the image in image processing?
In Photoshop, open file and go to File > File Info. In adobe Bridge select image then go to File > File Info or choose Metadata workspace. If you have Essentials workspace chosen click on image and take a look at right side of screen on Metadata panel.
What is filter in digital image processing?
A filter is an effect that can be added to an image that affectsthe overall appearance, or apearance of a selected area, of animage.
What is image acquisition in image processing?
Its name specifies definition. To get image from any source especially hardware based any source is called as image acquisition in the image processing because without image receiving/acquisition, the processing on the image is not possible. It is the first step in the workflow.
What is Image enhancement in digital image processing?
Image Enhancement is trying to improvise the quality of image over received or initial image.It is a subjective process. Meaning it varies from person to person to what extent the quality has to be fined to. Techniques involved are- 1. POINT PROCESSING. A IMAGE NEGATION B LOG COMPRESSION C CONTRAST STRETCHING D GREY LEVEL SLICING(WITH OR W/O BACKGROUND CONSERVATION) E BIT PLANE SLICING 2. NEIGHBORHOOD PROCESSING A HISTOGRAM EQUALIZATION B HISTOGRAM SPECIFICATION
What is postprocessing in digital image processing?
Post processing is importing image in software to enhance it for final publication - things like: removing noise, sharpening, removing unwanted elements and so on.