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Embedded Image Processing on the TMSCTM DSP: Examples in Code Composer StudioTM and MATLAB [Shehrzad Qureshi] on The TMSC Line of DSPs (Image Processing). Even though this topic has a narrow focus, it calls for a wide array of tools, some hardware (DSP. Written for practicing signal and image processing engineers, this book discusses the implementation of advanced image processing algorithms on.

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One means of performing high-pass filtering is to first repeatedly low-pass filter an image, and then subtract the smoothed image from the thee, thereby leaving only the high spatial frequency components.

Embedded Image Processing on the TMS320C6000 DSP: Examples in Code Composer Studio and MATLAB

The second unique aspect of the function pertains to the mechanics of how the lookup table is applied to transform the pixel intensities of the input image I. A full description of the entire C6x architecture is covered in [], so in this section we instead focus on explaining the rationale and motivation behind VLIW and how it fits into the C architecture, before moving to an important discussion on the difference between fixed-point and floating-point architectures.

Dep this type of GUI initialization, you must wait until the framework invokes O n l n i t D i a l o gwhich occurs shortly after the dialog is shown.

In ID signal processing, a time domain signal xn is filtered by convolving that signal with a set of Mcoefficients h: Hardcoverpages.

Spatial filtering is best used when dealing with unstructured or stochastic noise, where the location and magnitude of the noise is not known in advance, but development of a general model of the degrading process is feasible.

Calculation of the CDF for histogram equalization. NET 68 3. These methods do very little except grab the current window or level value from the slider control imagd call on a class variable of type W i n d o w L e v e l 8 b p p to actually process the image.

For integer “classes” MATLAB parlance for data types such as u i n t 8u i n t l 6and so on, the range is defined to be [0, 2 bpp -l]. Use or reproduction of the information provided on this CD-ROM for commercial gain is strictly prohibited.


Figure is an unprocessed SAR image of M tanks. Although this description of embedded image processing development may appear to be characterized by fire and brimstone, in reality the overall situation has gotten much better over the years. As is evident from this description, what was once a reasonably straightforward algorithm implementation has quickly become obfuscated with a myriad of memory usage concerns.

In this book, we largely deal with monochrome 8 bpp images, with pixel embefded ranging in value from embfdded to Diagram depicting the general software structure of the Windows applications developed in this book. GDI is a C library of functions and type definitions used for 2D graphics, providing exactly the type of graphics functionality needed for visualizing the results of image processing algorithms – namely the rendering of bitmapped images.

The two transposition operations consume processor cycles, and moreover lead to increased memory consumption, because matrix transposition requires a scratch array.

Embedded Image Processing on the TMSC DSP

Hence, if there are NOPs injected in the packet due to data dependencies, the processor’s resources are not fully utilized. Image Filtering 4. PV charger battery circuit 4. Microsoft Developer Network, http: Spatial Processing Techniques 99 the C67x series the difference will be even more pronounced on a fixed- point processor.

Image noise may be the result of a variety of sources, including: For example, photographers may use a red filter to separate plants from a background of mist or haze, and most professional photographers use a polarizing filter for glare removal1. Want to Read Currently Reading Read. The situation is exacerbated when the system gain of the acquisition device is increased, as any noise present with the system is amplified alongside the actual signal.

procrssing It is used in a variety of contexts, for instance as a quasi function pointer or to condense C-style s w i t c h statements or long if-then-else blocks into a single line of code. But that is the price one pays for speed – clarity suffers, at least with respect to a “reference” implementation.

req: Embedded Image Processing on the TMSC DSP

Listing is the contents of h i s t e q. By virtue of their capabilities, SAR systems have proven highly useful in geological terrain mapping, environmental applications such as demarcating oil spill boundariesand military surveillance and targeting. In the ideal case, we would hope that the execute packet equals the emebdded packet, but at least TI has covered their tracks somewhat if this cannot be done. In this book, there are three such prominently featured toolboxes: With the advent of Microsoft’s.


The application shell was built using the Visual Studio. This discussion serves two purposes: This is because at object construction time, the Windows child controls C S t a t i cProcexsing S l i d e r C t r land so on have not actually been created yet.

In later sections of this chapter we explore other types of filters that are sometimes better suited for the removal of this type of noise.

There are two ways of going about emhedded. Typically, performing the operation in the manner shown in Figure is faster when large kernel sizes are used with large images, the exact sizes being dependent on the speed of the FFT routine and the particular architecture on which the code is running on.

Embedded Image Processing on the Tms320c6000 DSP: Examples in Code Composer Studio and MATLAB

From the fundamental theorem of calculus, we can take the integral of both sides: The filter kernel is multiplied by the neighborhood surrounding each pixel in the input image, the individual products summed, and the result placed in the output image, as depicted in Figure In fact, it is such a powerful development environment that it even offers the ability to render buffers as images, a feature that is obviously of great utility when developing image processing applications.

There is typically less logic involved in DSP programs, where logic refers to branching and control instructions. A general rule of thumb is that linear convolution in the frequency domain should be considered if: