This website uses cookies to ensure you have the best experience. Learn more

Gray Scale Conversion Techniques Essay

1190 words - 5 pages

Effective Gray Scale Techniques By: Wilfredo C. Ileto Many people believe that color images will always be more effective than grayscale. I don’t agree with that perception. Grayscale can be just as visually powerful as color images when they are properly rendered. As a matter of fact, many of the great masterpieces in photographic history, such as those by Ansel Adams and Cartier Bresson, are grayscale images. While the trend has been moving towards full color reproduction, printing of grayscale or monotone images will always remain part of the printing process. Therefore, it is of great importance that we understand the process of converting color to grayscale and acquire the techniques to ...view middle of the document...

In the sample described above, the elements of the color image were composed of colors with the same luminosity. Converting the image to gray scale resulted in elements with similar tonal value. Thus the image simply disappeared. Another problem is that the dominant primary color will always have the most effect on the grayscale values in any particular area. If this dominant color lacks detail and contrast, the result will be a grayscale image which is likewise flat and

lacking in detail. This is most noticeable in the images of people, particularly Asians with yellow dominant in their flesh tones. The problem with the yellow in flesh tones is that it is strong in value and but lacking in detail. Merely converting a color image to grayscale using “Change Mode” in Photoshop can produce flesh tones that are dark and flat.

RGB Image

Change Mode to Grayscale

In order to address the problems discussed, it is clear that we need to control the strength that each of the colors contributes to the tonal values in the grayscale image. Using the RGB Channels for Grayscale Conversion The quickest method for effectively producing a grayscale image is to simply view the RGB image in its different color channels and select the channel which shows the best grayscale image. Please note that we should work with the file in its RGB mode because in a CMYK image some of the tonal values in the CMY channels have been transferred to the black channel. This is especially noticeable in images with strong black values in the shadow and near shadow areas. The procedure is as follows: 1. Apply auto level if needed. 2. Open the Channel Palette to preview of the grayscale image in each of the RGB channels. 3. Select the channel with the best grayscale image. 4. Convert from RGB to grayscale using the Change Mode command.

Red Channel

Green Channel

Blue Channel

Conversion from Red Channel

Using the Channel Mixer for Grayscale Conversion A longer but more precise procedure involves the use of the Channel Mixer tool of Photoshop.(illustration 10) The Channel Mixer allows us to apply different levels of strength from each of the color channels. We can mix the amount that each channel contributes to the tonal value of the grayscale image to achieve the desired effect.

1. Apply auto level if needed. 2. Open the Channel Palette to preview of the grayscale image in each of the RGB channels. 3. Determine the channel with the best grayscale image. 4. Open the channel mixer. 5....

Other Papers Like Gray Scale Conversion Techniques

Categories of Computer Crimes Essay

2285 words - 10 pages Categories of Computer Crimes CIS 170 – Information Technology in Criminal Justice Dr. Nicole L. Gray Marilyn T. Hawkins October 16, 2012 Computer Crimes are criminal activities, which involve the use of information technology to gain an illegal or an unsanctioned access to a computer system with volition of damaging, deleting or alter computer data. Computer crimes also include the activities such as electronic frauds, misuse of devices

Vpn, Voip, Wi-Fi Essay

3490 words - 14 pages [dsp HISTORY] Robert M. Gray The 1974 Origins of VoIP H istory often unfolds in unforeseen ways. The story told here provides an example in which developments in digital signal processing (DSP)—speech coding, in particular—had a profound impact on the early development of the ARPANET, the ancestor of the Internet. I discovered the story while I was preparing a historical talk for the Special Workshop in Maui (SWIM). SWIM was intended

Project Managemnet


Harrison Keyes Problem Solution

4110 words - 17 pages the company switch to digital e-book publishing. By accessing utilization of proven risk management techniques, Harrison-Keyes will minimize its exposure to unexpected and costly events. “Risk management is a proactive approach rather than reactive. The concept is a preventive process that is designed to ensure that surprises are reduced and that negative consequences associated with undesirable events are minimized” (Gray and Larson, 2006

Personal Communication Assessment

779 words - 4 pages Analyze The most important skill in life is learning how to deal with people. Being in the business industry we need communication skills to accomplish daily tasks such as giving employees’ feedback, writing reports, giving presentations, and sending emails. According to Mitchell (2010), there are several ways to test our communication skills. First, we need to rate ourselves in oral and written communication on a scale of 1 to 10

Dtlls Unit 402

1269 words - 6 pages according to Gray (2005,) should be on a set time scale, which identifies the steps the learner needs to follow using the SMART acronym, which is, ‘specific, measurable, achievable, realistic and time’. Short term and long term goals need to be recorded, with a recorded date for reviewing the goals, where agreed, they should be signed by teacher and student. The information gathered would be recorded on the Individual learning Plan (ILP). The

Nanotechnology Within Energy Markets

2880 words - 12 pages , it also involves low conversion efficiencies. The inclusion of Nano scale components in PV cells is a way to reduce some limitations. First, the ability to control the energy band gap provides flexibility and inter-changeability. Second, nanostructured materials enhance the effective optical path and significantly decrease the probability of charge recombination. The use of Nano crystal quantum dots, which are nanoparticles usually made of

Sedimentary Series And Paleocurrent Analysis In Ibri

2379 words - 10 pages . Janjou, D., Minoux, L., Beurrier, M., De Gramont, X., Le Métour, J. and Villey, M. (1986). Geological map of Ibri, Sheet NF 40-2F, Scale 1:100,000. Ministry of Petroleum and Minerals, Oman: Directorate General of Minerals. Lisle, R.J, and Leyshon, P.R. (2004). Stereographic projection techniques for geologists and Civil Engineers. Second Edition. London : Cambridge University Press. Lowe, D.R. (1982). Sediment gravity flows: II. Depositional

Medication and Schizophrenia

2976 words - 12 pages suffering from paranoid schizophrenia regard therapy as intrusions from hostile outside forces, which reduces compliance on the part of the patient (Gray, Wykes & Gournay, 2002). Other problem with treatment programs for schizophrenic patient is that they suffer from both positive and negative symptoms, each requiring different type of treatments. In order to combat the difficulty of treating schizophrenia, several techniques have been devised

Green Data Center

4902 words - 20 pages their operation. Infrastructure is installed in such a way that it has lowest power consumption and lowest carbon footprint Generation of minimal e-waste with recyclable or reusable equipment Steps for conversion to Green Data Centers The first and the foremost step is the evaluation of your data center in terms of energy efficiency. This step includes monitoring and measuring the consumption of energy for the entire enterprise There are


1818 words - 8 pages . * Operations management —techniques used to analyze any aspect of the organization’s production system. * Total Quality Management (TQM) —focuses on analyzing input, conversion, and output activities to increase product quality. * Management Information Systems (MIS) — provides information vital for effective decision making. Organizational Environment Theory Organizational Environment – The set of forces and conditions that operate beyond

Related Essays

Multiple Sclerosis: Changes Beyond Demyelination Essay

1573 words - 7 pages Expanded Disability State Scale (EDSS) was administered to the MS patients at the time of the MRI. Measures between groups were analyzed with the least squares regression. The Spearman rank correlation coefficient was applied to determine the relationships between the measurements of the MS patients. Highly significant differences (p<0.0001) were found between MS and control groups for fractional white matter volume, however not for gray matter (p

News Video Indexing Essay

3366 words - 14 pages gray scale frame to binary frame. in order to get the clear quality of text pixels one more binary image frame is created using new threshold value equal to (1threshold).The concept behind creating four binary image from a single image frame is to minimize the chances of losing any textual information during the conversion process. News Video Indexing and Retrieval System Using Feature-Based Indexing and Inserted-Caption Detection Retrieval

Solar Pv Grid Parity By Operational Excellence

1342 words - 6 pages minimize dynamic loss factors (i.e., minimize the effect of real life variability on the line throughput) • Use VSM (Value Stream Map) Lean techniques to reduce movement waste and enhance value added per square meter – Water recycling and net energy management optimization techniques: • Reduced tool water consumption 3% conversion cost potential in a cell fab (Ref 5 by MW Zander) • Energy savings and auto-generation 2% savings potential in a

The Role Of Project Management In Today's Business Environment

833 words - 4 pages exposed to in this text is transferable across most businesses and professions" (Larson, & Gray, 2011 p. 603). With all the project management tools and techniques a project manager can utilize one must also understand why some projects fail. Sometimes it is not enough to say that you manage your project competently, on time and deliver a quality a product. A great project manager must anticipate and understand the following conditions. The right