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Merge pull request #484 from openmv/fix_torainbow
Add color palette conversion to to_rainbow()
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commit
1ef73ff858
@ -1096,6 +1096,16 @@ static mp_obj_t py_image_to_rainbow(uint n_args, const mp_obj_t *args, mp_map_t
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image_t *arg_img = py_helper_arg_to_image_mutable(args[0]);
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bool copy = py_helper_keyword_int(n_args, args, 1, kw_args, MP_OBJ_NEW_QSTR(MP_QSTR_copy), false);
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int channel = py_helper_keyword_int(n_args, args, 2, kw_args, MP_OBJ_NEW_QSTR(MP_QSTR_rgb_channel), -1);
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int palette = py_helper_keyword_int(n_args, args, 3, kw_args, MP_OBJ_NEW_QSTR(MP_QSTR_color_palette), COLOR_PALETTE_RAINBOW);
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const uint16_t *color_palette = NULL;
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if (palette == COLOR_PALETTE_RAINBOW) {
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color_palette = rainbow_table;
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} else if (palette == COLOR_PALETTE_IRONBOW) {
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color_palette = ironbow_table;
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} else {
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nlr_raise(mp_obj_new_exception_msg(&mp_type_ValueError, "Invalid color palette!"));
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}
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image_t out;
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out.w = arg_img->w;
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@ -1113,7 +1123,7 @@ static mp_obj_t py_image_to_rainbow(uint n_args, const mp_obj_t *args, mp_map_t
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uint16_t *out_row_ptr = IMAGE_COMPUTE_RGB565_PIXEL_ROW_PTR(&out, y);
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for (int x = 0, xx = out.w; x < xx; x++) {
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IMAGE_PUT_RGB565_PIXEL_FAST(out_row_ptr, x,
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rainbow_table[IMAGE_GET_BINARY_PIXEL_FAST(row_ptr, x) * COLOR_GRAYSCALE_MAX]);
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color_palette[IMAGE_GET_BINARY_PIXEL_FAST(row_ptr, x) * COLOR_GRAYSCALE_MAX]);
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}
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}
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} else {
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@ -1136,7 +1146,7 @@ static mp_obj_t py_image_to_rainbow(uint n_args, const mp_obj_t *args, mp_map_t
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uint16_t *out_row_ptr = IMAGE_COMPUTE_RGB565_PIXEL_ROW_PTR(&out, y);
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for (int x = 0, xx = out.w; x < xx; x++) {
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IMAGE_PUT_RGB565_PIXEL_FAST(out_row_ptr, x,
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rainbow_table[IMAGE_GET_BINARY_PIXEL_FAST(row_ptr, x) * COLOR_GRAYSCALE_MAX]);
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color_palette[IMAGE_GET_BINARY_PIXEL_FAST(row_ptr, x) * COLOR_GRAYSCALE_MAX]);
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}
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}
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@ -1154,7 +1164,7 @@ static mp_obj_t py_image_to_rainbow(uint n_args, const mp_obj_t *args, mp_map_t
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uint16_t *out_row_ptr = IMAGE_COMPUTE_RGB565_PIXEL_ROW_PTR(&out, y);
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for (int x = 0, xx = out.w; x < xx; x++) {
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IMAGE_PUT_RGB565_PIXEL_FAST(out_row_ptr, x,
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rainbow_table[IMAGE_GET_GRAYSCALE_PIXEL_FAST(row_ptr, x)]);
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color_palette[IMAGE_GET_GRAYSCALE_PIXEL_FAST(row_ptr, x)]);
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}
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}
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} else {
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@ -1177,7 +1187,7 @@ static mp_obj_t py_image_to_rainbow(uint n_args, const mp_obj_t *args, mp_map_t
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uint16_t *out_row_ptr = IMAGE_COMPUTE_RGB565_PIXEL_ROW_PTR(&out, y);
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for (int x = 0, xx = out.w; x < xx; x++) {
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IMAGE_PUT_RGB565_PIXEL_FAST(out_row_ptr, x,
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rainbow_table[IMAGE_GET_GRAYSCALE_PIXEL_FAST(row_ptr, x)]);
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color_palette[IMAGE_GET_GRAYSCALE_PIXEL_FAST(row_ptr, x)]);
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}
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}
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@ -1194,19 +1204,19 @@ static mp_obj_t py_image_to_rainbow(uint n_args, const mp_obj_t *args, mp_map_t
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int pixel = IMAGE_GET_RGB565_PIXEL_FAST(row_ptr, x);
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switch (channel) {
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case 0: {
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pixel = rainbow_table[COLOR_RGB565_TO_R8(pixel)];
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pixel = color_palette[COLOR_RGB565_TO_R8(pixel)];
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break;
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}
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case 1: {
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pixel = rainbow_table[COLOR_RGB565_TO_G8(pixel)];
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pixel = color_palette[COLOR_RGB565_TO_G8(pixel)];
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break;
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}
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case 2: {
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pixel = rainbow_table[COLOR_RGB565_TO_B8(pixel)];
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pixel = color_palette[COLOR_RGB565_TO_B8(pixel)];
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break;
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}
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default: {
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pixel = rainbow_table[COLOR_RGB565_TO_GRAYSCALE(pixel)];
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pixel = color_palette[COLOR_RGB565_TO_GRAYSCALE(pixel)];
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break;
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}
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}
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@ -427,6 +427,7 @@ Q(to_rgb565)
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Q(to_rainbow)
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// duplicate Q(copy)
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// duplicate Q(rgb_channel)
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Q(color_palette)
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// Compress (in place)
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Q(compress)
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