Yoshihiro Yamazaki yoya

Multimedia Binary Engineer

yoya / CMYKrectangle.sh

Last active June 21, 2022 11:18

CMYK rectangle by ImageMagick

	convert -size 1024x1024 -background transparent xc: -compose darken \
	\( xc: -draw "fill Cyan rectangle 100,100,600,650" \) -composite \
	\( xc: -draw "fill Magenta rectangle 200,400,750,900" \) -composite \
	\( xc: -draw "fill Yellow rectangle 350,250,1000,650" \) -composite \
	-font KaiseiDecol-Regular.ttf +gravity -pointsize 256 -fill black -stroke black -strokewidth 18 \
	-draw "rotate 15 text 190,270 C" \
	-draw "rotate 0 text 350,870 M" \
	-draw "rotate -10 text 700,650 Y" \
	-draw "rotate 0 fill white stroke white text 390,620 K" \
	CMYK.png ;

yoya / RGBcircle.sh

Last active June 21, 2022 14:41

RGB circle by ImageMagick

	convert -size 1024x1024 -background transparent xc: -compose lighten \
	\( xc: -draw "fill red circle 512,350,512,650" \) -composite \
	\( xc: -draw "fill green2 circle 324,650,324,950" \) -composite \
	\( xc: -draw "fill blue1 circle 676,650,676,950" \) -composite \
	-font KaiseiDecol-Regular.ttf +gravity -pointsize 256 -fill black -stroke black -strokewidth 18 \
	-draw "text 420,320 R" \
	-draw "rotate -10 text -20,850 G" \
	-draw "fill white stroke white rotate 25 text 940,410 B" \
	RGB.png ;

yoya / dropcanvas.html

Last active June 6, 2022 13:20

file drop & canvas draw with petite-vue

	<head>
	<meta charset="utf-8">
	<meta name="copyright" content="Copyright © 2022/06/06- [email protected] . All Rights Reserved.">
	<style>
	.drop_area { min-width:300px; min-height:300px; border:thick solid red; }
	.drop_area:hover { background-color:#FF000040; }
	</style>
	</head>
	<body>
	<div v-scope="App()" @vue:mounted="mounted">

yoya / convolveRepeatedEdge.py

Last active January 30, 2022 14:40

convolve repeated edge

	import math
	import numpy as np

	def convolveRepeatedEdge(arr, kernel):
	arrLen = len(arr)
	kernelLen = len(kernel)
	kernelLen_harf = math.floor((kernelLen - 1) / 2)
	if type(arr) is list:
	arr2 = [0] * arrLen
	else:

yoya / typedarray_concat.js

Last active October 14, 2021 03:28

typedarray concat polyfill

	(function() {
	for (typedarr of [Int8Array, Uint8Array, Uint8ClampedArray,
	Int16Array, Uint16Array, Int32Array, Uint32Array,
	Float32Array, Float64Array]) {
	if (!typedarr.prototype.concat) {
	Object.defineProperty(typedarr.prototype, 'concat', {
	value: function(b) {
	const a = this;
	if (!b \|\| !b.length) return a.slice(0);
	const c = new a.constructor(a.length + b.length);

yoya / fast_float_testbed_macos.c

Created August 24, 2020 05:54

lcms2 の plugins/fast_float/fast_float_testbed.c から macOS で failed する要素を抜いたもの

	//---------------------------------------------------------------------------------
	//
	// Little Color Management System, fast floating point extensions
	// Copyright (c) 1998-2020 Marti Maria Saguer, all rights reserved
	//
	//
	// This program is free software: you can redistribute it and/or modify
	// it under the terms of the GNU General Public License as published by
	// the Free Software Foundation, either version 3 of the License, or
	// (at your option) any later version.

yoya / DCC.m

Last active May 14, 2020 18:49


	function A = DCC(I,k,T)
	% This function implements the image interpolation algorithm
	% based on the directional cubic convolution interpolation which
	% has been described in the paper:
	% D. Zhou, X. Shen, and W. Dong,
	% Image zooming using directional cubic convolution interpolation,
	% IET Image Processing, Vol. 6, No. 6, pp. 627-634, 2012.
	%
	% I(:,:) inputted low resolution gray image, range 0~1

yoya / 8x1colors.ppm

Created November 13, 2019 06:39

8x1colors.ppm (testimage)

yoya / 8x8colors.ppm

Created November 6, 2019 07:17

8x8colors.ppm (testimage)

yoya / rms.js

Created October 7, 2019 15:26

Root Mean Square

	// https://mathtrain.jp/leastsquares
	// https://mathtrain.jp/covariance

	function rms(xArr, yArr) {
	var count = xArr.length;
	if (count !== yArr.length) {
	return false;
	}
	var xMean = xArr.reduce(function(a, b) { return a + b; }) / count;
	var yMean = yArr.reduce(function(a, b) { return a + b; }) / count;