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From an RGB image, the resulted segmentations of the independent R, G, and B channels could have different pixels whose values are incorrect classified in other cluster providing incorrect segmentations between the three channels. For this reason, we combine the segmented images of the three components to have the final segmented image with a single gray-scale component avoiding as closely as possible the bad classification of pixels in the following way,

$$ final\ segmented\kern0.5em image=\frac{R+G+B}{3} $$

The following criterion is applied to obtain a final binary segmented image with only two clusters (black for the background and white for the blue whale),

$$ binary\ image=\left\{\begin{array}{ll}1,\hfill final\ segmented\kern0.5em image<{\sigma}_c\hfill \\ {}0,\hfill otherwise\hfill \end{array}\right. $$

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f shows the binary image that represents the final segmentation of the standard KM, the standard FCM, and the proposed DHFCM segmentation algorithm, respectively. From this Figure, one can see that the proposed algorithm (see Fig. 5f ) shows the better subjective quality in comparison with the standard methods. We observe that the bad classification of pixels in the Fig. Grunland CB0595 Sandals Women Black ek4HCYi
is corrected in this stage providing a good classification of blue whales and background. Finally, with the results of binary image, we can obtain the contour, edges, and characteristics of the blue whale and its dorsal fin in the original image to use this data in the classification process.

The CICIMAR-IPN photographic catalog contains 771 images in digital RGB color image format which 621 images were acquired with the Canon camera and 150 images where obtained with different mobile devices. In this catalog, the 57.2% of images correspond to both sides of blue whale, and the 23.8 and 19.0% belong to the right and left side of blue whale, respectively. For the analysis, we only consider the segmentation and classification of blue whale images with the dorsal fin categorized as triangular, hooked, and falcate. The performance results of these proposed methods are compared with the manual segmentations of the first human observer as a ground truth. Also, a comparison of the second human observer with the ground truth images provides a performance measure that is regarded as an optimal performance level. The ground truth images were provided by CICIMAR-IPN.

Fig. 6

GUI of the proposed App. a Home screen. b Main menu. c Segmented image

$$ Sp=TN/\left(TN+FP\right) $$
$$ Se=TP/\left(TP+FN\right) $$
$$ Acc=\left(TP+TN\right)/ number\kern0.5em of\ pixels\kern0.5em in\ image $$
$$ Si=\kern0.5em 1\hbox{-} \frac{\sqrt{{\left(1-Acc\right)}^2\kern0.5em +{\left(1-Se\right)}^2}}{\sqrt{2}} $$
$$ entropy=-{\displaystyle \sum_j{p}_{ij} \log \left({p}_{ij}\right)} $$

The purity quantifies the degree to which a cluster contains entities belonging to this fraction; it is defined as follows: the purity in each cluster j is computed as \( \mathrm{purity}=\frac{1}{n_j} \max \left({n}_j^i\right) \) , where \( {n}_j^i \) is the number of objects in cluster j with class label i .

CxJS, or simply Cx, is a feature-rich JavaScript framework for building complex web front-ends, such as BI tools, dashboards and admin apps. Modern frameworks such as React and Angular provide an excellent base for building UI components, however, component implementation and many other application aspects are left to the developer to figure out. CxJS tries to fill that gap and provide the all necessary ingredients required for modern web applications.

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. It has over 100 contributors and corporate sponsorship. From the documentation:

Cycle’s core abstraction is your application as a pure function main() where inputs are read effects (sources) from the external world and outputs (sinks) are write effects to affect the external world. These I/O effects in the external world are managed by drivers: plugins that handle DOM effects, HTTP effects, etc.

is a lightweight (7KB), declarative UI library that offers an alternative to React:

There a lot of small details that give DIO its edge that don't realy touch on new API's but rather on creating a larger surface area of what React already supports and adding to this.

For example React can render strings, numbers, elements and components but what if it was able to render Promises or Thenables? This would help solve a lot of "problems" with data fetching and lazy loading that is possible with React but not declaratively incentivised at the library level.

One of the important principles behind is accessibility, which makes me think it's a potential candidate for projects in government and higher education, where there are often stringent compliance requirements. From the website:

Dojo 2 is grounded in the belief that accessibility is as important online as it is in our physical environments, and architects of both share a similar responsibility to provide access to all...all Dojo 2 widgets have been designed to be accessible by default, and any tools needed to meet WCAG standards have been integrated into @dojo/widget-core and @dojo/widgets.

Internationalization is another area of focus:

Internationalization, or i18n, is the process of decoupling an application from a particular language or culture, and is a major requirement of most enterprise applications. As such, internationalization is one of Dojo 2’s core concerns. @dojo/i18n, Dojo 2’s internationalization ecosystem, provides everything that is needed to internationalize and localize an application, from locale-specific messaging to date, number, and unit formatting.

Like Angular, Dojo uses TypeScript as its development language.

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is a, "thin, fast, dependency-free vdom view layer". Like Vue, it can be used as a jQuery replacement. Similar to React, it leaves concerns beyond views to other libraries (but provides a good list of options). From the documentation:

So far, you haven’t seen more code than required to render a simple list. However, the simplicity of this short snippet gives you a good idea of the rest of the framework – it’s really not much more than that. The same functionality implemented with Backbone.js would look somewhat Allhqfashion Womens LowTop Zipper Blend Materials Closed Toe Solid Boots Silverzippers VKeKHD

This is at least the best approach to a proper handling the view lifecycle I have come across. As you can see: all the logic for keeping model and view in sync can be omitted with React .

There still exists one problem when mixing Backbone.JS code and React code: Although the React sources itself can be loaded with an AMD loader (like Padders Womens Boot Kim Extra Wide EEEEE Fit Fur Trimmed Tie Boot Dual Fit System 30mm Heel With Free Footcare UK shoehorn Black Y8ptm2I3n
), the code written for the use with React contains these weird-looking snippets I explained to be JSX . Without an AMD loader this is not a problem: JSX source code is included in script tags with a specific type ( <script type="text/jsx">...</script> ). Scripts with this type are being detected by a the JXSTransformer which translates the JSX source code to pure JavaScript. If you know how require.js works, you can now figure out what the problem is.

For every module you load with require.js , a new <script> tag is added to the of your HTML document. Sadly, it is not possible to specify the type of each of these <script> tags. To be able to load JXS source files with require.js , we have to use some other approach. This problem reminded me of another case in which a file that does not contain pure JavaScript code is loaded with require.js : templates. One common way to load templates with require.js is to use the text plugin. Therefore, I had a look at how require.js plugins work and whether it might be possible to load JSX code with a plugin, transform it in the client, and execute the resulting JavaScript code afterwards. What I came up with is now available on GitHub and can be used for exactly this use case. My plugin is certainly not production-ready, nor has it been tested excessively. However, you should give it a try and I would also appreciate some feedback and/or PRs!

Now that we can load source files containing JSX code, we can finally combine Backbone.js and React .

First, we need to set up a little Backbone.js application just like we would do without React . Whether you do this with Yeoman , just Clarks Womens Nikki MidtownBlack Tumbled LeatherUS 6 W n9tlc
, or manually doesn’t really matter. You will end up with an HTML document similar to this one

and some JavaScript file (in our case the app/main.js script) that configures the application:

In the application’s run method I would like to start Backbone.js ‚ history and let a router control the application. In the router, I would then render view components. To be able to do this, the router needs to know about React and also contain some JSX code:

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