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While the term “carving” is known by most skiers, it is surprising how few skiers actually know how to carve a turn. Most recreational skis are no longer toned-down versions of race gear.īut that shouldn’t keep all of us from laying down trenches on our favorite trails, particularly in the early season before the woods build up a base. Today, all the cool kids are talking about rocker, alpine touring skis and boots with a walk mode. At the very least, it helped weekend warriors make some clean turns on their local hill. Recreational ski equipment tried to emulate what the world’s best racers were doing. Back then everyone was obsessed with carving turns. The ski industry over the past few seasons has been so focused on making skis true all-mountain masters, that the ability to hold and rip on a firm surface has taken a backseat to floating in the snow and releasing the turn.įifteen years ago when we lived through the side cut revolution, skis were evolving to allow mere mortals to feel a pure carved turn without having to go mach schnell. Returns contours list of (n,2)-ndarraysĮach contour is an ndarray of shape (n, 2),Ĭonsisting of n (row, column) coordinates along the contour.A fter all the time we spent on groomers last year (because the woods, without snowmaking, were frankly a bit scary), I have felt a re-awakening of the carved turn. ( mask is set to False wherever array is NaN). Note that NaN values are always excluded from the considered region (See below for details.) mask 2D ndarray of bool, or NoneĪ boolean mask, True where we want to draw contours. Alternately, this means that low-valued elements are always If ‘low’ thenĬontours will wind counter- clockwise around elements below the Polygons around islands of low- or high-valued elements. Indicates whether the output contours will produce positively-oriented
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Takes dictionary of inputs, e.g.:įunc_kwargs= Notably useful for passing dtypeĪrgument to np.mean. cval floatĬonstant padding value if image is not perfectly divisible by the Primary functions are numpy.sum, numpy.min, numpy.max, This function must implement an axis parameter. block_size array_like or intĪrray containing down-sampling integer factor along each axis.įunction object which is used to calculate the return value for each This function is useful for max and mean pooling, for example. block_reduce ( image, block_size=2, func=, cval=0, func_kwargs=None ) ¶ Total least squares estimator for N-dimensional lines.īlock_reduce ¶ asure. Total least squares estimator for 2D ellipses. Total least squares estimator for 2D circles. Subdivision of polygonal curves using B-Splines. _entropy(image)Ĭalculate the Shannon entropy of an image. _table(label_image)Ĭompute image properties and return them as a pandas-compatible table. Measure properties of labeled image regions. (data, model_class, …)įit a model to data with the RANSAC (random sample consensus) algorithm. Return the intensity profile of an image measured along a scan line. Test whether points lie inside a polygon. _crofton(image)Ĭalculate total Crofton perimeter of all objects in binary image. (image)Ĭalculate total perimeter of all objects in binary image. _normalized(mu)Ĭalculate all normalized central image moments up to a certain order. _coords_central(coords)Ĭalculate Hu’s set of image moments (2D-only). _central(image)Ĭalculate all central image moments up to a certain order. _surface_area(verts, faces)Ĭompute surface area, given vertices & triangular facesĬalculate all raw image moments up to a certain order. Marching cubes algorithm to find surfaces in 3d volumetric data. Label connected regions of an integer array. _tensor_eigvals(image)Ĭompute the eigenvalues of the inertia tensor of the image. _tensor(image)Ĭompute the inertia tensor of the input image. Test whether points on a specified grid are inside a polygon. _contours(image)įind iso-valued contours in a 2D array for a given level value. _effect(image)Ĭompute a metric that indicates the strength of blur in an image (0 for no blur, 1 for maximal blur).Ĭalculate the Euler characteristic in binary image. _polygon(coords, …)Īpproximate a polygonal chain with the specified tolerance.ĭownsample image by applying function func to local blocks.