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| import { Jimp, mkJGD, getTestDir } from '@jimp/test-utils';
| import configure from '@jimp/custom';
| import types from '@jimp/types';
|
| import color from '../src';
|
| const jimp = configure({ types: [types], plugins: [color] }, Jimp);
|
| describe('Convolution', function() {
| this.timeout(15000);
|
| const imgs = [
| jimp.read(
| mkJGD(
| '22222222',
| '22222222',
| '22888822',
| '22888822',
| '22888822',
| '22888822',
| '22222222',
| '22222222'
| )
| ),
| jimp.read(
| mkJGD(
| '88222222',
| '88222222',
| '22222222',
| '22222222',
| '22222222',
| '22222222',
| '22222222',
| '22222222'
| )
| )
| ];
|
| let imgMid;
| let imgTopLeft; // stores the Jimp instances of the JGD images above.
|
| before(done => {
| Promise.all(imgs)
| .then(imgs => {
| imgMid = imgs[0];
| imgTopLeft = imgs[1];
| done();
| })
| .catch(done);
| });
|
| const sharpM = [[-1, -1, 0], [-1, 1, 1], [0, 1, 1]];
|
| it('3x3 sharp matrix on EDGE_EXTEND', done => {
| imgMid
| .clone()
| .convolution(sharpM)
| .getJGDSync()
| .should.be.sameJGD(
| mkJGD(
| '22222222',
| '28EEE822',
| '2EFFF802',
| '2EF88002',
| '2EF88002',
| '28800002',
| '22000002',
| '22222222'
| ),
| 'Mid light block'
| );
| imgTopLeft
| .clone()
| .convolution(sharpM)
| .getJGDSync()
| .should.be.sameJGD(
| mkJGD(
| '80022222',
| '00022222',
| '00022222',
| '22222222',
| '22222222',
| '22222222',
| '22222222',
| '22222222'
| ),
| 'Top left light block'
| );
| done();
| });
|
| it('3x3 sharp matrix on EDGE_WRAP', done => {
| imgMid
| .clone()
| .convolution(sharpM, jimp.EDGE_WRAP)
| .getJGDSync()
| .should.be.sameJGD(
| mkJGD(
| '66666666',
| '28EEE822',
| '2EFFF802',
| '2EF88002',
| '2EF88002',
| '28800002',
| '22000002',
| '22222222'
| ),
| 'Mid light block'
| );
| imgTopLeft
| .clone()
| .convolution(sharpM, jimp.EDGE_WRAP)
| .getJGDSync()
| .should.be.sameJGD(
| mkJGD(
| 'FC06666F',
| '80022228',
| '00022222',
| '22222222',
| '22222222',
| '22222222',
| '22222222',
| 'E8222228'
| ),
| 'Top left light block'
| );
| done();
| });
|
| it('3x3 sharp matrix on EDGE_CROP', done => {
| imgMid
| .clone()
| .convolution(sharpM, jimp.EDGE_CROP)
| .getJGDSync()
| .should.be.sameJGD(
| mkJGD(
| '86666662',
| '68EEE820',
| '6EFFF800',
| '6EF88000',
| '6EF88000',
| '68800000',
| '62000000',
| '20000000'
| ),
| 'Mid light block'
| );
| imgTopLeft
| .clone()
| .convolution(sharpM, jimp.EDGE_CROP)
| .getJGDSync()
| .should.be.sameJGD(
| mkJGD(
| 'FC066662',
| 'C0022220',
| '00022220',
| '62222220',
| '62222220',
| '62222220',
| '62222220',
| '20000000'
| ),
| 'Top left light block'
| );
| done();
| });
|
| it('new pixel value is greater than 255', async () => {
| const expectedImg = await jimp.read(
| getTestDir(__dirname) + '/images/qr-convoluted.png'
| );
| const image = await jimp.read(getTestDir(__dirname) + '/images/qr.jpg');
|
| image
| .convolution([
| [0, 0, 0, 0, 0],
| [0, 1, 1, 1, 0],
| [0, 1, 0, 1, 0],
| [0, 1, 1, 1, 0],
| [0, 0, 0, 0, 0]
| ])
| .bitmap.data.should.be.deepEqual(expectedImg.bitmap.data);
| });
| });
|
|
