Система фильтрации
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3 changed files with 232 additions and 34 deletions
126
main.cpp
126
main.cpp
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@ -34,34 +34,45 @@ void lab01() {
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//
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void lab02_01() {
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auto img = readBMPImage("../tea.bmp");
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auto text1024 = textImg(u"1024", &font, 3);
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auto text512 = textImg(u"512", &font, 3);
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auto text256 = textImg(u"256", &font, 3);
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auto text128 = textImg(u"128", &font, 3);
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auto img_512 = downscale2x(img);
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auto img_256 = downscale2x(img_512);
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auto img_128 = downscale2x(img_256);
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img_512.save("../lab02/tea_512.bmp");
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img_256.save("../lab02/tea_256.bmp");
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img_128.save("../lab02/tea_128.bmp");
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auto newImg = img.appendRight(img_512).appendRight(img_256).appendRight(img_128);
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newImg.save("../lab02/tea_downscale.bmp");
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// auto img_from_512 = upscale2x(img_512);
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img_512.overlay(text512, 0, 0).save("../lab02/tea_512.bmp");
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img_256.overlay(text256, 0, 0).save("../lab02/tea_256.bmp");
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img_128.overlay(text128, 0, 0).save("../lab02/tea_128.bmp");
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img.overlay(text1024, 0, 0).appendRight(img_512).overlay(text512, 1024, 0).appendRight(img_256).
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overlay(text256, 1536, 0).appendRight(img_128).overlay(text128, 1792, 0).save(
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"../lab02/tea_downscale.bmp");;
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auto img_from_512 = upscale2x(img_512).overlay(text512, 0, 0);
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//// auto img_from_256 = upscale2x(upscale2x(img_256));
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//// auto img_from_128 = upscale2x(upscale2x(upscale2x(img_128)));
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// auto tmp = upscale2x(img_256);
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// auto img_from_256 = upscale2x(tmp);
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// auto tmp2 = upscale2x(img_128);
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// auto tmp3 = upscale2x(tmp2);
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// auto img_from_128 = upscale2x(tmp3);
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// img_from_512.save("../lab02/tea_from_512.bmp");
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// img_from_256.save("../lab02/tea_from_256.bmp");
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// img_from_128.save("../lab02/tea_from_128.bmp");
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// img.appendRight(img_from_512)->appendRight(img_from_256)->appendRight(img_from_128)->save("../lab02/tea_upscale.bmp");
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//// newImg2->save("../lab02/tea_upscale.bmp");
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auto tmp = upscale2x(img_256);
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auto img_from_256 = upscale2x(tmp).overlay(text256, 0, 0);
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auto tmp2 = upscale2x(img_128);
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auto tmp3 = upscale2x(tmp2);
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auto img_from_128 = upscale2x(tmp3).overlay(text128, 0, 0);
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img_from_512.save("../lab02/tea_from_512.bmp");
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img_from_256.save("../lab02/tea_from_256.bmp");
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img_from_128.save("../lab02/tea_from_128.bmp");
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img.overlay(text1024, 0, 0).appendRight(img_from_512).appendRight(img_from_256).appendRight(img_from_128).save(
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"../lab02/tea_upscale.bmp");
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// newImg2->save("../lab02/tea_upscale.bmp");
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}
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//
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void lab02_02() {
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auto img = readBMPImage("../tea.bmp");
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auto ogText = textImg(u"Оригинал", &font, 3);
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auto text256 = textImg(u"256 оттенков", &font, 3);
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auto text128 = textImg(u"128 оттенков", &font, 3);
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auto text64 = textImg(u"64 оттенка", &font, 3);
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auto text32 = textImg(u"32 оттенка", &font, 3);
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auto gsImg = grayscale(img);
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gsImg.save("../lab02/tea_grayscale_256.bmp");
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gsImg.overlay(text256, 0, 0).save("../lab02/tea_grayscale_256.bmp");
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auto gsPixels = gsImg.pixels_copy();
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auto width = gsImg.width();
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auto height = gsImg.height();
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@ -70,39 +81,94 @@ void lab02_02() {
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gsPixels(i, j) = (gsPixels(i, j) / 2) * 2;
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}
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}
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auto gsImg128 = BMPImage(gsPixels);
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auto gsImg128 = BMPImage(gsPixels).overlay(text128, 0, 0);
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gsPixels = gsImg.pixels_copy();
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for (int i = 0; i < height; ++i) {
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for (int j = 0; j < width; ++j) {
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gsPixels(i, j) = (gsPixels(i, j) / 4) * 4;
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}
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}
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auto gsImg64 = BMPImage(gsPixels);
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auto gsImg64 = BMPImage(gsPixels).overlay(text64, 0, 0);
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gsPixels = gsImg.pixels_copy();
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for (int i = 0; i < height; ++i) {
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for (int j = 0; j < width; ++j) {
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gsPixels(i, j) = (gsPixels(i, j) / 8) * 8;
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}
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}
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auto gsImg32 = BMPImage(gsPixels);
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auto gsImg32 = BMPImage(gsPixels).overlay(text32, 0, 0);
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gsImg128.save("../lab02/tea_grayscale_128.bmp");
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gsImg64.save("../lab02/tea_grayscale_64.bmp");
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gsImg32.save("../lab02/tea_grayscale_32.bmp");
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gsImg.appendRight(gsImg128).appendRight(gsImg64).appendRight(gsImg32).save("../lab02/tea_grayscale.bmp");
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img.overlay(ogText, 0, 0).appendRight(gsImg).overlay(text256, 1024, 0).appendRight(gsImg128).appendRight(
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gsImg64).appendRight(gsImg32).save("../lab02/tea_grayscale.bmp");
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}
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//
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void lab02_03() {
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auto img = readBMPImage("../tea.bmp");
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auto text = textImg(u"Оригинал", &font, 3);
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auto text_avrg = textImg(u"Среднее 1.5x", &font, 5);
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auto text_avrg2 = textImg(u"Среднее 2x", &font, 6);
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auto text_avrg3 = textImg(u"Среднее 3x", &font, 9);
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auto text_lin = textImg(u"Линейное 1.5x", &font, 5);
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auto text_lin2 = textImg(u"Линейное 2x", &font, 6);
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auto text_lin3 = textImg(u"Линейное 3x", &font, 9);
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auto img_1_5 = upscale1_5x(img);
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auto img_1_5_ver2 = upscale1_5x_ver2(img);
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auto img_2 = upscale2x(img);
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auto img_2_ver2 = upscale2x_ver2(img);
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auto img_3 = upscale2x(img_1_5);
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img_1_5.save("../lab02/lab02_03/tea_x1_5.bmp");
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img_2.save("../lab02/lab02_03/tea_x2.bmp");
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img_3.save("../lab02/lab02_03/tea_x3.bmp");
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img.appendRight(img_1_5).appendRight(img_2).appendRight(img_3).save(
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"../lab02/lab02_03/tea_upscale.bmp"); //.appendRight(img_3)
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// img.appendRight(img_1_5).save("../lab02/lab02_03/tea_upscale.bmp");
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auto img_3_ver2 = upscale2x_ver2(img_1_5_ver2);
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img_1_5.overlay(text_avrg, 0, 0).appendRight(img_1_5_ver2).overlay(text_lin, 1536, 0).save(
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"../lab02/lab02_03/tea_x1_5.bmp");
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img_2.overlay(text_avrg2, 0, 0).appendRight(img_2_ver2).overlay(text_lin2, 2048, 0).save(
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"../lab02/lab02_03/tea_x2.bmp");
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img_3.overlay(text_avrg3, 0, 0).appendRight(img_3_ver2).overlay(text_lin3, 3072, 0).save(
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"../lab02/lab02_03/tea_x3.bmp");
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img.overlay(text, 0, 0).appendRight(img_1_5).overlay(text_avrg, 1024, 0).appendRight(img_2)
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.overlay(text_avrg2, 2560, 0).appendRight(img_3).overlay(text_avrg3, 4608, 0).save(
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"../lab02/lab02_03/tea_upscale.bmp");
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img.overlay(text, 0, 0).appendRight(img_1_5_ver2).overlay(text_lin, 1024, 0).appendRight(img_2_ver2)
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.overlay(text_lin, 2560, 0).appendRight(img_3_ver2).overlay(text_lin, 4608, 0).save(
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"../lab02/lab02_03/tea_upscale_ver2.bmp");
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}
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void lab03() {
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auto img = readBMPImage("../tea.bmp");
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auto imgGS = grayscale(img);
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int avrg_mask[9] = {1, 1, 1, 1, 1, 1, 1, 1, 1};
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int previtt_mask1[9] = {-1, 0, 1, -1, 0, 1, -1, 0, 1};
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int previtt_mask2[9] = {-1, -1, -1, 0, 0, 0, 1, 1, 1};
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int sobel_mask1[9] = {-1, 0, 1, -2, 0, 2, -1, 0, 1};
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int sobel_mask2[9] = {-1, -2, -1, 0, 0, 0, 1, 2, 1};
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auto avrg_text = textImg(u"Осреднение", &font, 3);
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auto previtt_text = textImg(u"Фильтр Превитта", &font, 3);
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auto sobel_text = textImg(u"Фильтр Собеля", &font, 3);
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auto text = textImg(u"Оригинал", &font, 3);
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auto avrg_image = filter(imgGS, avrg_mask).overlay(avrg_text, 0, 0);
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auto previtt_image1 = filter(imgGS, previtt_mask1, 1);//.overlay(previtt_text, 0, 0);
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auto previtt_image2 = filter(imgGS, previtt_mask2, 1);//.overlay(previtt_text, 0, 0);
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previtt_image1.save("../lab03/previtt1.bmp");
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previtt_image2.save("../lab03/previtt2.bmp");
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PixelArray previttPixels(previtt_image1.width(), previtt_image1.height());
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for (int y = 0; y < previtt_image1.height(); ++y) {
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for (int x = 0; x < previtt_image1.width(); ++x) {
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previttPixels(y, x) = previtt_image1.pixels()(y, x) + previtt_image2.pixels()(y, x);
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}
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}
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auto previtt_image = BMPImage(previttPixels).overlay(previtt_text, 0, 0);
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auto sobel_image1 = filter(imgGS, sobel_mask1, 1).overlay(sobel_text, 0, 0);
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auto sobel_image2 = filter(imgGS, sobel_mask2, 1).overlay(sobel_text, 0, 0);
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PixelArray sobelPixels(sobel_image1.width(), sobel_image2.height());
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for (int y = 0; y < sobel_image1.height(); ++y) {
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for (int x = 0; x < sobel_image1.width(); ++x) {
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previttPixels(y, x) = sobel_image1.pixels()(y, x) + sobel_image2.pixels()(y, x);
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}
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}
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auto sobel_image = BMPImage(previttPixels).overlay(sobel_text, 0, 0);
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imgGS.overlay(text, 0, 0).appendRight(avrg_image).save("../lab03/avrg_filter.bmp");
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imgGS.overlay(text, 0, 0).appendRight(previtt_image).save("../lab03/previtt_filter.bmp");
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imgGS.overlay(text, 0, 0).appendRight(sobel_image).save("../lab03/sobel_filter.bmp");
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}
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void test() {
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@ -123,7 +189,7 @@ void test() {
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test(2, 2) = Pixel{0, 0, 0};
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auto test_img = BMPImage(test);
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test_img.save("../test.bmp");
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auto test_scale = upscale2x(test_img);
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auto test_scale = upscale1_5x_ver2(test_img);
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test_scale.save("../test_scale.bmp");
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}
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@ -162,12 +228,14 @@ void test3() {
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}
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int main() {
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lab01();
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//lab01();
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// lab02_01();
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// lab02_02();
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// lab02_03();
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lab03();
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// test();
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// test2();
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// test3();
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// auto t = readBMPImage("../lab02/lab02_03/tea_x3.bmp");
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return 0;
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}
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